Add 90/7 and 81/60
1st number: 12 6/7, 2nd number: 1 21/60
90/7 + 81/60 is 1989/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 7 × 60 = 420,
90/7 = 90 × 60/7 × 60 = 5400/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Add the two like fractions:
5400/420 + 567/420 = 5400 + 567/420 = 5967/420 - 5967/420 simplified gives 1989/140
- So, 90/7 + 81/60 = 1989/140
In mixed form: 1429/140
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