3 boxes times 40 = 120 + 3 = 143
or 3 boxes times 43 = 129
Answer:
The two ratios are equivalent.
Step-by-step explanation:
Reduce both fractions:
6/21 = 2/7 [Take out 3 from both sides]
8/28 = 2/7 [Take out 4 from both sides]
2/7 = 2/7
2x+18+1-1 works if that's all you want