Add 81/60 and 70/40
1st number: 1 21/60, 2nd number: 1 30/40
81/60 + 70/40 is 31/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
81/60 = 81 × 2/60 × 2 = 162/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120 - Add the two like fractions:
162/120 + 210/120 = 162 + 210/120 = 372/120 - 372/120 simplified gives 31/10
- So, 81/60 + 70/40 = 31/10
In mixed form: 31/10
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