Question

How do you solve `|10a-8|=78`?

Answer 1

8.6 or -7

Explanation:

I10a - 8I = 78
Separate solving in 2 parts:
a. (10a - 8) = 78
10a = 86
`a = 86/10 = 8.6`
b. - (10a - 8) = 78
-10a + 8 = 78
-10a = 70
`a = - 70/10 = - 7`