Add 15/70 and 80/12
1st number: 15/70, 2nd number: 6 8/12
15/70 + 80/12 is 289/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
80/12 = 80 × 35/12 × 35 = 2800/420 - Add the two like fractions:
90/420 + 2800/420 = 90 + 2800/420 = 2890/420 - 2890/420 simplified gives 289/42
- So, 15/70 + 80/12 = 289/42
In mixed form: 637/42
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