Add 81/15 and 12/70
1st number: 5 6/15, 2nd number: 12/70
81/15 + 12/70 is 39/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
81/15 = 81 × 14/15 × 14 = 1134/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
12/70 = 12 × 3/70 × 3 = 36/210 - Add the two like fractions:
1134/210 + 36/210 = 1134 + 36/210 = 1170/210 - 1170/210 simplified gives 39/7
- So, 81/15 + 12/70 = 39/7
In mixed form: 54/7
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