Add 28/7 and 21/60
1st number: 4 0/7, 2nd number: 21/60
28/7 + 21/60 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 7 × 60 = 420,
28/7 = 28 × 60/7 × 60 = 1680/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Add the two like fractions:
1680/420 + 147/420 = 1680 + 147/420 = 1827/420 - 1827/420 simplified gives 87/20
- So, 28/7 + 21/60 = 87/20
In mixed form: 47/20
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