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

Answer 1

Answer:

x = 3/-16

y = 7/4

Step-by-step explanation:

12x - y = -4 ------------(1)

4x -3y = -6 -------------(2)

From the first equation, find y

y = 12x + 4

Now plug in y = 12x + 4 in the second equation, we get

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

4x - 36x - 12 = -6

-32x -12 = -6

-32x  = 12 - 6

-32x = 6

x = 6/-32

x = 3/-16

Now plug in x = 3/-18 in y = 12x + 4 and find the value of y.

y = 12(3/-16) + 4

y = 36/-16 + 4

y = 9/-4 + 4

y = -2 1/4 + 4

y = 1 3/4

y = 7/4

Hope this will helpful.

Thank you.