Add 72/36 and 81/70
1st number: 2 0/36, 2nd number: 1 11/70
72/36 + 81/70 is 221/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
72/36 = 72 × 35/36 × 35 = 2520/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
81/70 = 81 × 18/70 × 18 = 1458/1260 - Add the two like fractions:
2520/1260 + 1458/1260 = 2520 + 1458/1260 = 3978/1260 - 3978/1260 simplified gives 221/70
- So, 72/36 + 81/70 = 221/70
In mixed form: 311/70
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