Respuesta :
Answer:
21x + 35y
Step-by-step explanation:
Distribute the 7 to everything in the parentheses.
7*3=21
7*5=35
Step 1: distribute
7(3x+5y) turns into (21x+35y)
Since there is no more to the problem, the final answer would be 21x+35y
7(3x+5y) turns into (21x+35y)
Since there is no more to the problem, the final answer would be 21x+35y