Please help!

Question 10)

4x + 5x + 12 = -6 (given)
9x + 12 = -6 (simplify)
9x = - 18 (subtraction)
x = -2 (addition)

Which reason is incorrect?

A) Addition
B) given
C) simplify
D) subtraction

Respuesta :

A) Addition
because they already sovled and gave the right answer which is -2. you don´t need to add anything else. it´s already done.