Answer:
12x - 84y + 24z
Step-by-step explanation:
When doing these if there is a number outside of the parenthesis then that mean you have to combine those terms by that i mean
12(x -7y + 2z)
12× X is combined to be 12x
12 × -7y = -84y
12 × 2z = 24z
so your new expression would be
12x - 84y + 24z
