Add 56/20 and 21/7
1st number: 2 16/20, 2nd number: 3 0/7
56/20 + 21/7 is 29/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
56/20 = 56 × 7/20 × 7 = 392/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
21/7 = 21 × 20/7 × 20 = 420/140 - Add the two like fractions:
392/140 + 420/140 = 392 + 420/140 = 812/140 - 812/140 simplified gives 29/5
- So, 56/20 + 21/7 = 29/5
In mixed form: 54/5
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