Add 25/28 and 21/60
25/28 + 21/60 is 87/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
25/28 = 25 × 15/28 × 15 = 375/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Add the two like fractions:
375/420 + 147/420 = 375 + 147/420 = 522/420 - 522/420 simplified gives 87/70
- So, 25/28 + 21/60 = 87/70
In mixed form: 117/70
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