Add 21/60 and 6/7
21/60 + 6/7 is 169/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
6/7 = 6 × 60/7 × 60 = 360/420 - Add the two like fractions:
147/420 + 360/420 = 147 + 360/420 = 507/420 - 507/420 simplified gives 169/140
- So, 21/60 + 6/7 = 169/140
In mixed form: 129/140
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