Question

If 9x - 10y = 10 is a true equation, what would be the value of 9x - 10y - 79x + 10y - 7?

a) -70x + 3
b) -70x + 17
c) 70x + 3
d) 70x + 17

Answer 1

The value of 9x - 10y - 79x + 10y - 7 is -70x + 20y - 7. Hence, option A) is correct.

Step-by-step explanation:

To find the value of 9x - 10y - 79x + 10y - 7, we can simplify the expression by combining like terms. 9x and -79x are like terms, and 10y and 10y are like terms as well. When we combine these terms, we get -70x + 20y - 7. So, the value of 9x - 10y - 79x + 10y - 7 is -70x + 20y - 7 (Option A).