Add 81/60 and 70/80
1st number: 1 21/60, 2nd number: 70/80
81/60 + 70/80 is 89/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
81/60 = 81 × 4/60 × 4 = 324/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
70/80 = 70 × 3/80 × 3 = 210/240 - Add the two like fractions:
324/240 + 210/240 = 324 + 210/240 = 534/240 - 534/240 simplified gives 89/40
- So, 81/60 + 70/80 = 89/40
In mixed form: 29/40
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