If u were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the 2nd equation is substituted into the 1st equation.
2x – 3y = –29
x + 4y = 13

Question

If u were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the 2nd equation is substituted into the 1st equation. 
2x – 3y = –29 
x + 4y = 13

anonymous · Answer

x+4y=13
x=13-4y

substitute x=13-4y into 2x-3y=-29

2(13-4y)-3y=-29
26-8y-3y=-29
-11y=-29-26
y=55/11
y=5

using y=5, substitute it into x=13-4y
x=13-4(5)
x=13-20
x=-7

anonymous · Answer

Do you mean it'd be 2x – 3(–4y + 13) = –29??

anonymous · Answer

@monokerous?!

anonymous · Answer

no. it's correct. x=13-4y so if you plug this into the equation, 2x becomes 2(13-4y)