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

2x − 3y = −29
x + 4y = 13

2(4y + 13) − 3y = −29
2(−4y + 13) − 3y = −29
2x − 3(4y + 13) = −29
2x − 3(−4y + 13) = −29

Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation.

2x − 3y = −29 
x + 4y = 13

 2(4y + 13) − 3y = −29
 2(−4y + 13) − 3y = −29
 2x − 3(4y + 13) = −29
 2x − 3(−4y + 13) = −29

anonymous · Answer

How long have you been working on solving this?

anonymous · Answer

not long just doont understand it

anonymous · Answer

I'm sure I'll get crap from other users but oh well. The answer is B. I worked it out in my head, I'm bad at showing my work so you might want to ask your teacher or someone how to solve using the sub method