Add 20/15 and 72/56
1st number: 1 5/15, 2nd number: 1 16/56
20/15 + 72/56 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
20/15 = 20 × 56/15 × 56 = 1120/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
72/56 = 72 × 15/56 × 15 = 1080/840 - Add the two like fractions:
1120/840 + 1080/840 = 1120 + 1080/840 = 2200/840 - 2200/840 simplified gives 55/21
- So, 20/15 + 72/56 = 55/21
In mixed form: 213/21
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