Add 12/20 and 90/28
1st number: 12/20, 2nd number: 3 6/28
12/20 + 90/28 is 267/70.
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,
12/20 = 12 × 7/20 × 7 = 84/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
90/28 = 90 × 5/28 × 5 = 450/140 - Add the two like fractions:
84/140 + 450/140 = 84 + 450/140 = 534/140 - 534/140 simplified gives 267/70
- So, 12/20 + 90/28 = 267/70
In mixed form: 357/70
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