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.

15x - y = -6
5x - 3y = -13

5(-15x - 6) - 3y = -13
5(15x + 6) - 3y = -13
5x - 3(15x + 6) = -13
5x - 3(-15x - 6) = -13

Answer 1

first isolate y in the first equation

Answer 2

15x + 6 = y

Answer 3

now plug 15x + 6 in for y in the second equation

Answer 4

That will give you the answer

Answer 5

did you figure it out?

Answer 6

C

Answer 7

yea thx