Answer: 105x + -45y
Step-by-step explanation: Since there are three terms inside the parentheses in this problem, the 15 distributes through all three terms.
Before distributing however, change the -3y to plus a negative 3y.
So we have 15(2x) + 15(-3y) + 15(5x).
This simplifies to 30x + -45y + 75x.
Now combine like terms to get 105x + -45y.
