Add 70/20 and 72/28
1st number: 3 10/20, 2nd number: 2 16/28
70/20 + 72/28 is 85/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
70/20 = 70 × 7/20 × 7 = 490/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
72/28 = 72 × 5/28 × 5 = 360/140 - Add the two like fractions:
490/140 + 360/140 = 490 + 360/140 = 850/140 - 850/140 simplified gives 85/14
- So, 70/20 + 72/28 = 85/14
In mixed form: 61/14
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