If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation.

8x - y = -9
4x - 3y = -22

4(-8x - 9) - 3y = -22
4x - 3(-8x - 9) = -22
4(8x + 9) - 3y = -22
4x - 3(8x + 9) = -22
@ganeshie8

Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation. 

8x - y = -9 
4x - 3y = -22

 4(-8x - 9) - 3y = -22
 4x - 3(-8x - 9) = -22
 4(8x + 9) - 3y = -22
 4x - 3(8x + 9) = -22
@ganeshie8

ganpat · Answer

solve for y in 1st equation ...

i.e. put y on one side and rest on another

ganpat · Answer

and then, substitute value of y in another equation..

anonymous · Answer

8x - y = -9

Subtract 8x to both sides:

-y = -8x - 9

Multiply all terms by -1:

y = 8x + 9

Substitute 8x + 9 for y in the 2nd equation:

4x - 3(8x + 9) = -22

Can you solve for x? @iamabarbiegirl

anonymous · Answer

so the answer is D? @iGreen

anonymous · Answer

@ganeshie8

anonymous · Answer

Oh, I didn't realize I gave the answer..but yes that's correct.

anonymous · Answer

lol thanks