Add 72/15 and 70/20
1st number: 4 12/15, 2nd number: 3 10/20
72/15 + 70/20 is 83/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Add the two like fractions:
288/60 + 210/60 = 288 + 210/60 = 498/60 - 498/60 simplified gives 83/10
- So, 72/15 + 70/20 = 83/10
In mixed form: 83/10
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