Add 10/12 and 21/70
10/12 + 21/70 is 17/15.
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,
10/12 = 10 × 35/12 × 35 = 350/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Add the two like fractions:
350/420 + 126/420 = 350 + 126/420 = 476/420 - 476/420 simplified gives 17/15
- So, 10/12 + 21/70 = 17/15
In mixed form: 12/15
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