Add 21/12 and 60/70
1st number: 1 9/12, 2nd number: 60/70
21/12 + 60/70 is 73/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
60/70 = 60 × 6/70 × 6 = 360/420 - Add the two like fractions:
735/420 + 360/420 = 735 + 360/420 = 1095/420 - 1095/420 simplified gives 73/28
- So, 21/12 + 60/70 = 73/28
In mixed form: 217/28
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