Simplify. Combine like terms
12x - 9x = 3x
7 - 15 = -8
3x - 8 is your answer
hope this helps
<em>Your answer would be, </em><em>3x - 8.</em>
Thanks,
<em>Deku ❤</em>
Answer:
42 cubic units
Step-by-step explanation:
2x3x7
The answer is 31...