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 second equation is substituted into the first equation.
2x – 7y = 4
3x + y = –17

Answer 1

A.) 2(3x – 17) – 7y = 4
B.) 2(–3x – 17) – 7y = 4
C.) 2x – 7(3x – 17) = 4
D.) 2x – 7(–3x – 17) = 4

Answer 2

I have gotten the answer 2x-7(3x-17)=4

Answer 3

not sure if im correct though