Question

I have the answer but I just want to make sure

Two equations are given below:

a − 3b = 16
a = b − 2

What is the solution to the set of equations in the form (a, b)?
A. (−2, −6)
B. (−7, −9)
C. (−11, −9)
D. (−12, −10)

Answer 1

C. (-11, -9)

Explanation:

a-3b=16

a=b-2

(b-2)-3b=17

b-2-3b=16

-2b=18

-b=9

b=-9

a=b-2

a=-9-2

a=-11

C. (-11, -9)