Add 42/7 and 81/10
1st number: 6 0/7, 2nd number: 8 1/10
42/7 + 81/10 is 141/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
42/7 = 42 × 10/7 × 10 = 420/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
81/10 = 81 × 7/10 × 7 = 567/70 - Add the two like fractions:
420/70 + 567/70 = 420 + 567/70 = 987/70 - 987/70 simplified gives 141/10
- So, 42/7 + 81/10 = 141/10
In mixed form: 141/10
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