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.

12x - y = -4
4x - 3y = -6

a. 4x - 3(-12x - 4) = -6

b. 4x - 3(12x + 4) = -6

c. 4(12x + 4) - 3y = -6

d. 4(-12x - 4) - 3y = -6

Answer 1

@johnweldon1993

Answer 2

@ParthKohli

Answer 3

@nincompoop

Answer 4

Do the first part. Isolate y from the first equation: y =?? + ?

Answer 5

Now substitute what you solved with the first step into the 2nd equation (sub for y).