# Questions on Algebra: Systems of Linear Equations answered by real tutors!

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 169735: Solve this equation: (I am checking my homework to see if i got it right) 4[3-3(x+1)]+1=2(-31-x)2x+31 Here's my work/answer: 12-12x-12+1=-62-2x+2x+31 -12x+1=-50-2x+2x=31 -12x+1=-50-2x+2x+19 -12x=-50-2x+2x+18 -12x=-32 x= 2 2/3 Click here to see answer by Alan3354(31487)

 Question 169737: Solve equation: (please check to see if my answer is right- thank you so much!) 21=(4-5x)-(1-x)=4x-2(x-3) Here is my work/answer: 21+4-5x-1-x=4x-2x+6 4-5x-1=5x-2x+27 -1=-2x+31 30=-2x x=-15 Click here to see answer by checkley77(12569)
 Question 169737: Solve equation: (please check to see if my answer is right- thank you so much!) 21=(4-5x)-(1-x)=4x-2(x-3) Here is my work/answer: 21+4-5x-1-x=4x-2x+6 4-5x-1=5x-2x+27 -1=-2x+31 30=-2x x=-15 Click here to see answer by Alan3354(31487)

 Question 169773: (7x/4)-[(6x-(1)]/2)=(3/4) The fractions really mess me up. I am sorry but my work makes no sense so I will just leave it off. Click here to see answer by solver91311(17059)

 Question 169770: Problem: Suppose \$8,000 is invested at interest rate k, compounded continuously, and grows to \$11,466.64 in 6 years. a) Find the interest rate b) Find the exponential growth function c) Find the balance after 10 years d) Find the doubling time. Thank you. Click here to see answer by Edwin McCravy(8999)

 Question 169896: how do you solve linear equaions with the subsitution method? Click here to see answer by nerdybill(7003)
 Question 169896: how do you solve linear equaions with the subsitution method? Click here to see answer by Alan3354(31487)

 Question 169975: I really need help solving the following problem. Any assistance you can provide me in doing so will be greatly appreciated. Thanks! One number is 6 less than another. The product of the number is 72. Find the numbers. Click here to see answer by jim_thompson5910(28696)

 Question 170001: This is a systems of equations question. If the equation is: 2x+6=y 3x+4y=24 __________ Please solve by substitution, elimination, AND graphing. ( the same equation) Thank you so very much. Click here to see answer by jim_thompson5910(28696)

 Question 170175: Tyler said, "the sum of two numbers is 180 and twice the first number increased by forty is equal to to twice the second number." Help Tyler find the numbers. Click here to see answer by jim_thompson5910(28696)

 Question 170598: I am so confused by this. My mom tried to help me but she doesn't understand either. There is one of the questions I am supposed to solve. If someone can show me the steps to this one maybe I can figure out the others. Maria has \$7.30 in dimes and quarters. She has 34 coins. How many dimes could she possibly have? Explain your answer. Don't forget to show your work! (Hint: The problem could be solved using a linear system of equations. Try to set up an equation indicating the number of coins and another equation with their value.) Click here to see answer by Mathtut(3670)

 Question 170659: Solve by the substitution method x + y = 2 x + y = -9 Click here to see answer by jim_thompson5910(28696)

 Question 170689: Larry can paint a room in 8 hours by himself. After he worked for 2 hours, Patrick joins him and they finish the job in 2 hours. How long would it take Patrick to do the entire job without Larry? Click here to see answer by stanbon(57940)

 Question 170730: I'm 60 years old and I decided to go back to show and this math is a little hard please please help. Plot the graph of the equations 4x - 6y = 2 and 2x - 3y = 1 and interpret the result. thank you in advance. Click here to see answer by jim_thompson5910(28696)

 Question 170811: y=x-5 What is the x and y intercepts Click here to see answer by Alan3354(31487)

 Question 170858: Write a Linear equation that gives total fees (t) to be paid by astudent taking (x) credits. \$20 per credit. \$50 student service fee. Click here to see answer by Mathtut(3670)

 Question 170857: Write a Linear equation that gives total fees (t) to be paid by astudent taking (x) credits. \$20 per credit. \$50 student service fee. Click here to see answer by Mathtut(3670)

 Question 170972: f(x)=x-3/x+4 the x-3 is over the x+4 What would the y and x intercepts be? Click here to see answer by Mathtut(3670)

 Question 171140: I do not understand fraction problems. Please help me with this one so I have a correct model to refer to for the rest of my worksheet. Thank you. (7x/8)- (4)= x Click here to see answer by jojo14344(1512)

 Question 171134: How do I solve: x=-2/7y+3/4? How do i find the y-intercept and x-intercept and graph y= 2x+4 / y= -2x-4? Click here to see answer by jojo14344(1512)

 Question 171281: whats the steps to solving systems of equations by using elimination Click here to see answer by solver91311(17059)
 Question 171281: whats the steps to solving systems of equations by using elimination Click here to see answer by midwood_trail(310)

 Question 171363: I apologize if this is in the wrong heading. My problem is systems of linear equation by substitution. { y=4x { y=2x+6 I am not sure how to do this problem. I tried getting the numbers to match up so i could figure it out, but i cant seem to grasp it. Sorry if you cannot solve this problem and i'm sorry for wasting your time, but i am about ready to give up. This is a worksheet, and not from a book, by the way. Click here to see answer by Alan3354(31487)
 Question 171363: I apologize if this is in the wrong heading. My problem is systems of linear equation by substitution. { y=4x { y=2x+6 I am not sure how to do this problem. I tried getting the numbers to match up so i could figure it out, but i cant seem to grasp it. Sorry if you cannot solve this problem and i'm sorry for wasting your time, but i am about ready to give up. This is a worksheet, and not from a book, by the way. Click here to see answer by gonzo(654)
 Question 171363: I apologize if this is in the wrong heading. My problem is systems of linear equation by substitution. { y=4x { y=2x+6 I am not sure how to do this problem. I tried getting the numbers to match up so i could figure it out, but i cant seem to grasp it. Sorry if you cannot solve this problem and i'm sorry for wasting your time, but i am about ready to give up. This is a worksheet, and not from a book, by the way. Click here to see answer by jim_thompson5910(28696)

 Question 171527: Given y=1/2x-1, which of the following tables of value are correct? Table A x,y 2,0 0,-1 -2,-2 Table B x,y 5,2 2,0 -5,-2 Table C x,y 6,3 7,2 -8,-3 Table D x,y 1,1 -1/2, -1/2 -1,-1 Click here to see answer by KnightOwlTutor(293)

 Question 170304: Solve the system of linear equations. Determine whether the system is consistent or inconsistent. 2x + 8y + 3z= -4 -4x - 16y - 6z = 8 3x + 4y - 3z = 2 Click here to see answer by Alan3354(31487)

 Question 171749: 3x - y = 0 5y = 15 Click here to see answer by Alan3354(31487)

 Question 171748: 3x - y = 10 x - 3y = 11 Click here to see answer by Alan3354(31487)

 Question 171805: How to write an equation in standard form using integers Click here to see answer by jim_thompson5910(28696)

 Question 172348: 1 times a number plus -5 that will give me an answer of -3 Click here to see answer by Mathtut(3670)