3 times 5 times 2.5 = $37.5
3 x 5 =15
15 x 2.5 =37.5
37.5 x 2 = 75 for both of them
I don't know if this is right or not, but that's how I would solve it!
Paris,munish and Oslo are mistake 。
If you combine like terms the answer is 4x
Answer: the Second step is to divide 4 from each sides
Step-by-step explanation: