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

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Question 625200: Can you please help me solve this I keep getting the operations mixed up:
Method of Substitution
5a = 3 - b
5a = 4 - b
Thank you
Click here to see answer by Alan3354(69443)

Question 625290: Solve the following systems of equations and find all possible solutions as (x,y).

Click here to see answer by stanbon(75887)

Question 625318: y=x+2
y=-2x + 5
Click here to see answer by Khukubabu(5)

Question 625395: what's the solution to 13x-2y=702x-2y=4?

Click here to see answer by reynard2007(52)

Question 625455: if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this.
8. 3y + x = 4
x = 2y − 1

Click here to see answer by richwmiller(17219)

Question 625491: simplify: (4x + 5y) + (3x+8y)
Click here to see answer by jim_thompson5910(35256)

Question 625554: i am stuck.. the problem is .35x+.25y=.3(8)
x+y=8
y=-x+8
.35x+.25(-x+8+.3
.35x+.25x+2=2.4
.6x=2.4-2
i have to solve using linear equations of substitution...HELP PLEASE

Click here to see answer by Khukubabu(5)

Question 625530: What is the answer to this equation using the substitution method?
y=2x^2+2
y=2(x^4-2x^2+1)

Click here to see answer by lynnlo(4176)

Question 625697: Solve by Addition/Elimination Method:4x+8y+8=0
6y=3x+8
Click here to see answer by mananth(16946)

Question 625825: A) 7a+3z=12
B) 3a+7z=6
Given the formulas above, what is the value of a-z?
Click here to see answer by nvegupta(2)

Question 625864: Use the substitution method to solve the system of equations. Enter your answer as an ordered pair.
y = 9x + 4
x = 6
Click here to see answer by oscargut(2103)

Question 625770: 8x+2y-z=34
7x+3y-2z=40
3x-5y+z=24
Click here to see answer by Maths68(1474)

Question 625976: Can y= -1 be graphed
Click here to see answer by muzzu_123(3)

Question 625995: Find the solution to the following system of linear equations:
3x+y=8
-2x+y=-7
Click here to see answer by lawdej(58)

Question 626152: Please help me solve this: I have tried numerous differnt ways and keep getting nowhere. The problem is : Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-5x + 4y = -16
-15x + 2y = -58
Click here to see answer by jim_thompson5910(35256)

Question 626238: how do you solve the system algebraically
5x + 2y = 10
3x + 2y = 6
Click here to see answer by Alan3354(69443)

Question 626662: the smallestof three consecutives integers is added to twice the largest, the result so obtained is 15 less than four timess the middle integer.find the integers
Click here to see answer by ewatrrr(24785)

Question 626677: If 2a=7b=8c and 2a+7b+8c=3870,then What is the Value of 2a
Click here to see answer by ewatrrr(24785)

Question 626751: Determine graphically the x-value when y= -5 in the given equation
-x+2y= -8
The x-value when y= -5 is x ??

Click here to see answer by jim_thompson5910(35256)

Question 626750: Solve the system of linear equations by graphing
2x-y=0
4x+y=6

Click here to see answer by jim_thompson5910(35256)

Question 626910: solve x
sqrt of x = 4
im not sure what to do with the square root
Click here to see answer by solver91311(24713)

Question 626911: a divided by x = 4
please explaine the answer so i know what to do
Click here to see answer by Alan3354(69443)

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(35256)

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 ewatrrr(24785)

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(75887)

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(35256)

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(16946)

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(24785)

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(24785)

Question 627609: Which Of The following equations has roots Of -3/2 and 4
Click here to see answer by solver91311(24713)

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(17219)

Question 627704: how would you solve this problem
x = 2y = 3
Click here to see answer by Alan3354(69443)

Question 627706: y + 1 = -2/3(x-3)
how would you solve this problem?
Click here to see answer by richwmiller(17219)

Question 627960: 5(x-2) =3x+8
Click here to see answer by jim_thompson5910(35256)

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(1073)

Question 627961: how can you turn this peoblem into a linear equation? 4x=2y+8
Click here to see answer by ewatrrr(24785)

Question 628183: how do i solve 3x + 7y = 16 by using the addition method
4x - 3y = 9
Click here to see answer by solver91311(24713)

Question 628183: how do i solve 3x + 7y = 16 by using the addition method
4x - 3y = 9
Click here to see answer by josmiceli(19441)

Question 628293: -7n+5=8n-10
Click here to see answer by stanbon(75887)

Question 627548: graph x + y = 8 then make a table for it of linear equations
Click here to see answer by asuar010(338)

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(17219)

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(7384)

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(24785)

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