Answer:
5.7 x 10^7
Step-by-step explanation:
Answer: 5.7 x 107
15
9x-3=42
9x=42+3
9x=45
9x/9=45/9
x=5
3x-5=3
7r+63
7(r+9)
7(r)+7(9)
Hope this helps .-.
