Question

How do you solve `|9+ 10c | - 15= - 5`?

Answer 1

`1/10`
`-19/10`

Explanation:

Transpose 15 to the right side.
Separate solving in 2 parts:
a. (9 + 10c) = 10
10c = 10 - 9 = 1
`c = 1/10`

b. - (9 + 10c) = 10
- 9 - 10 c = 10
-10c = 19
`c = - 19/10`