Add 54/7 and 21/40
1st number: 7 5/7, 2nd number: 21/40
54/7 + 21/40 is 2307/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
54/7 = 54 × 40/7 × 40 = 2160/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
21/40 = 21 × 7/40 × 7 = 147/280 - Add the two like fractions:
2160/280 + 147/280 = 2160 + 147/280 = 2307/280 - So, 54/7 + 21/40 = 2307/280
In mixed form: 867/280
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