Answer:
20y+30
Step-by-step explanation:
5(y+6) + 15y
= 5y + 30 + 15y
= 5y + 15y + 30
= 20y + 30
5 • (y + 6) + 15y
20y + 30 = 10 • (2y + 3)
answer: 10 • (2y + 3)
