Add 2x to both sides,
3x+9=18
Subtract 9 from both sides. 3x=9
Divide both sides by 3.
x=3
Answer: ?????
Step-by-step explanation: Are you finding who would have the most after a certain number of years have passed?
(42)^3 -(24)^3 - (18)^3
= (74,088)-(13,824)-(5,832)
= 54,432
The right answer is probably C
