Add 81/20 and 70/72
1st number: 4 1/20, 2nd number: 70/72
81/20 + 70/72 is 226/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
81/20 = 81 × 18/20 × 18 = 1458/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Add the two like fractions:
1458/360 + 350/360 = 1458 + 350/360 = 1808/360 - 1808/360 simplified gives 226/45
- So, 81/20 + 70/72 = 226/45
In mixed form: 51/45
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