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

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Question 626982: solve 2x-y+z=-7, x-3y+4z=-19, and -x+4y-3z=18
can someone show how they got the answer please, ty
Click here to see answer by stanbon(57377)

Question 626911: a divided by x = 4
please explaine the answer so i know what to do
Click here to see answer by jim_thompson5910(28595)

Question 627173: PLEASE HELP ME! I'M BEGGING YOU!
Solve the following the substitution. Write your answer in the form of an ordered pair.
1. x + 5y = - 8
x = 3y
2. 3x - 3y = 12
3x + y = 8
3. 4x + 3y = 7
x = 6y - 5
4. y = 3x + 3
4x + 3y = -17
5. a = 4b
5a + 4b = 12

Click here to see answer by jim_thompson5910(28595)

Question 627146: please help me solve this. its linear systems by substitution
3x+2y=5
5x-9y=-4
Click here to see answer by mananth(12270)

Question 627231: Solve the system of equations using substitution.
y = 2x + 3
y = 3x + 1

a)(–2, –1)
b)(–1, –2)
c)(2, 7)
d)(–2, –5)

Click here to see answer by ewatrrr(10682)

Question 627285: SOLVE FOR X: AX=B-X
Do i divide a to get on the right side? And what do i do with the -x??? Thank you
Click here to see answer by ewatrrr(10682)

Question 627609: Which Of The following equations has roots Of -3/2 and 4
Click here to see answer by solver91311(16897)

Question 627724: Solve the following system of equations. ( If there are infinitely many solutions, enter a parametric solution using t and/or s.)
3x − 2y + z = 0
x + 3y − 4z = −8
2x − 3y + 5z = 6
x − 8y + 9z = 16

Click here to see answer by richwmiller(9143)

Question 627704: how would you solve this problem
x = 2y = 3
Click here to see answer by Alan3354(30993)

Question 627706: y + 1 = -2/3(x-3)
how would you solve this problem?
Click here to see answer by richwmiller(9143)

Question 627960: 5(x-2) =3x+8
Click here to see answer by jim_thompson5910(28595)

Question 627960: 5(x-2) =3x+8
Click here to see answer by Maths68(1474)

Question 627960: 5(x-2) =3x+8
Click here to see answer by lenny460(775)

Question 627961: how can you turn this peoblem into a linear equation? 4x=2y+8
Click here to see answer by ewatrrr(10682)

Question 628183: how do i solve 3x + 7y = 16 by using the addition method
4x - 3y = 9
Click here to see answer by solver91311(16897)

Question 628183: how do i solve 3x + 7y = 16 by using the addition method
4x - 3y = 9
Click here to see answer by josmiceli(9693)

Question 628293: -7n+5=8n-10
Click here to see answer by stanbon(57377)

Question 627548: graph x + y = 8 then make a table for it of linear equations
Click here to see answer by asuar010(324)

Question 628375: can you help me solve this equation by substitution
-2/3x + 1/2y = -1
y = -1/3x
Click here to see answer by richwmiller(9143)

Question 628512: find the solution x+6y=23 x-y=-5
Click here to see answer by Maths68(1474)

Question 628541: At the local fast food restaurant, 5 cokes and 7 orders of french fries cost $7.25, while 4 cokes and 5 orders od french fries cost $5.50. Then what are the prices of a single coke and a single order of fries?
Click here to see answer by nerdybill(6962)

Question 628537: Please help I cant figure out how to set this up:
Tickets to a theater cost $35 each for orchestra seats and $17.50 each for balcony seats. At a Saturday performance, three more than twice as many orchestra tickets as balcony tickets were sold, bringing in a total of $9817.50. How many of each kind of ticket were sold?
Click here to see answer by ewatrrr(10682)

Question 625976: Can y= -1 be graphed
Click here to see answer by lenny460(775)

Question 628609: can you help me solve this. linear system equations by elimination
x + y + z =4
x - y + 2z=1
x - y - 3z = -4
Click here to see answer by Alan3354(30993)

Question 628632: 3x+4y+18
Click here to see answer by Alan3354(30993)

Question 628767: Im having a hard time remembering linear equations. The problem is
-14xeqaul sign -546-148y
Sorry i dont have a equal sign
Click here to see answer by richwmiller(9143)

Question 628720: Solve the system of equations using the elimination method. Enter the answer as an ordered pair.
2x - 3y = 4
5x + 2y = -9

Click here to see answer by meetkisai(17)

Question 629018: Need help. Use the method of substitution to solve the system of linear equations. 2x-y=8 9x-4y=36.
Can you please show work.
Click here to see answer by stanbon(57377)

Question 629059: solve system graphically
3x-y=0
2x-y=-1
Click here to see answer by reviewermath(529)

Question 629077: Solve the following systems of equations and find all possible solutions as (x,y).

Click here to see answer by meetkisai(17)

Question 629129:
Click here to see answer by caligna1234(2)

Question 629152: The points (5, 3) and (1,−1) are plotted on a sheet of graph paper. The sheet of
graph paper is folded along a line so that the point (5, 3) lands on top of the point (1,−1). What is the equation of the line that represents the fold?

Click here to see answer by ewatrrr(10682)

Question 629226: Find an equation for the line that passes through the points-4,1 and 2, -3 .

Click here to see answer by solver91311(16897)

Question 629246: Solve the following system of equations.
x - 2y = 5
2x - 4y = 10
Thank you!
Click here to see answer by stanbon(57377)

Question 629353: 2
______
x^2-7x-12
the huge ___ is a division sign.
Click here to see answer by Alan3354(30993)

Question 629465: x+4y=14
5x+3y=2
Click here to see answer by reviewermath(529)

Question 629508: The sum of the digits of a two digit number is 10 . if the number formed by reversing the digit is less than the original number by 36.find the number .

WITH BEST REGARDS .
Click here to see answer by reviewermath(529)

Question 629518: Solve the inequality 9-x>6x+44
Click here to see answer by reviewermath(529)

Question 629519: Consider the following equation
8y+11x=-7
find three solution of the equation
Graph the line
Click here to see answer by reviewermath(529)

Question 629597: 2x + 5=15

Click here to see answer by 55305(76)

Question 629662: Find the x- and y- intercepts for the line -x+4y=4 and then graph the line.
Thanks
Click here to see answer by ewatrrr(10682)

Question 629664: Find the equation of the lines that goes through the given points (2,-4) and (-3,-9). Write the equation in both standard form and slope-intercept form.
Thanks.
Click here to see answer by Alan3354(30993)

Question 629675: Can you please explain how I would solve this linear inequality
5($2.00x) < $60.00
Click here to see answer by richwmiller(9143)

Question 629726: Use the graphing approach to determine whether the system is consistent, the system is inconsistent, or the equations are dependent. If the system is consistent, find the solution set from the graph and check it. (If the system is dependent, enter DEPENDENT. If the system is inconsistent, enter INCONSISTENT.)
1/3x - 1/4y = 5
x + 2y = -7
Click here to see answer by solver91311(16897)

Question 629816: A motel rents double rooms at $35 per day and single rooms at $24 per day. If 24 rooms were rented one day for a total of $730, how many rooms of each kind were rented?
Click here to see answer by solver91311(16897)

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