Add 20/12 and 15/70
1st number: 1 8/12, 2nd number: 15/70
20/12 + 15/70 is 79/42.
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,
20/12 = 20 × 35/12 × 35 = 700/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Add the two like fractions:
700/420 + 90/420 = 700 + 90/420 = 790/420 - 790/420 simplified gives 79/42
- So, 20/12 + 15/70 = 79/42
In mixed form: 137/42
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