Question

What is the result of subtracting the second equation from the first?

87 - 4y = -4
-3.7 + 4y = 5

Answer 1

90.7 - 8y = -9.

Explanation:

87 - 4y = -4

-3.7 + 4y = 5

87 - (-3.7) - 4y - 4y = -4 - 5

90.7 - 8y = -9

Answer 2

-9

Explanation:

The awnswer to the first equation is -4 and -4-5 is equal to -9