39 times 3 and 15 times 3 then 27 times 2 then add together to get 216
21+45+70=136
136+(2+x)=180
First subtract 136 from both sides
(2+x)=44=M<ROS
Subtract 2 from both sides
x=42
Please Rewrite you question so it makes sense.
Good Luck :D
Answer:
3x + 21 is your answer
Step-by-step explanation:
3(x+7)
3 × x = 3x
3 × 7 = 21
3x = 21