SOLUTION: solve by substitution method. A.) y=-X+6 B.) y=-2x+7 Y=-x-3 -2x+y=-3

Question 136947: solve by substitution method. A.) y=-X+6 B.) y=-2x+7
Y=-x-3 -2x+y=-3

C.) y=x-5 D.) 2x+3y=-1
4x+y=15 3x-3y=-4

I solved C. I think so: X=4 Y=-1 the others I tried but can't get anywhere.
This is a homework test-not in book, instructor gave these on a sheet
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
A cannot be done. that says -3 = +6
B and

x = 2.5
C you have correct
D and

x = -1
You can solve for y :-D
RELATED QUESTIONS
Use the substitution method to solve each linear system. a) x-2y=7 y=-x+1 b) x+3y=5... (answered by ikleyn)

Have I correctly solved the 4 problems below using the systems of simultaneous equations, (answered by ikleyn)

i dont understand how to do this 7. Solve using substiitution a) y=x-1 y=2x-3... (answered by glabow)

solve each by the substitution method. Y=2x+6 3x-2y=-11 x+3y=-3... (answered by stanbon)

SOLVE BY SUBSTITUTION METHOD :) x+4=-1/2+4x 2x+3y=1/2x+2y+1 solve by ADDITION... (answered by anshu_a)

Solve each system by the substitution method a) 2x - y = 4 2x - y = 3 b) x + 3y = (answered by stanbon)

Using Substitution to Solve Linear Systems of Equations 1. y= x -1 2x -y =0 2. x+y=... (answered by checkley71)

solve: A) x=-2y 3x-2y=8 B) 2x-3y=13 3x+y=3 C) 2s-t=4 3s-5t=2 D) x/3-y/6=-1/3... (answered by midwood_trail)

Can you please tell me if i got these correct? Im doing a practice test to study for my... (answered by Edwin McCravy,solver91311)