help me plssssss it’s due tonight!!

Help Me Plssssss Its Due Tonight class=

Answer :

Answer:

B. 3x+1

Step-by-step explanation:

(3x+3)+(2x+1)+(4x+2)=9x+6

(12x+7)-(9x+6)=3x+1

answer:
B. 3x + 1

step-by-step explanation:
(4x + 2) + (2x + 1) + (3x + 3)
add like terms
9x + 6
(12x + 7) - (9x + 6)
3x + 1