Answer:
3x+9
Step-by-step explanation:
Remember that like terms can combine. 7x and -4x are like terms, and they combine to get 3x. 12 and -3 are like terms, and they combine to get 9. Therefore, the simplified expression is 3x+9.
Hope this helped!
width=8cm
lenth=11
it would be what they said
so sorry i need 50 pts
