Question

Select the value of x that makes the equation

“-3(x + 10) + 2x = 30” true.
1. 60
2. 0
3. 30
4. -60
5. -20

Answer 1

-60

Explanation:

-3(x + 10) + 2x = 30 becomes -3x - 30 + 2x = 30 after having performed the multiplication. Combining like terms, we get -x = 60, so that x must be -60 (Answer 4)