Add 15/18 and 90/28
1st number: 15/18, 2nd number: 3 6/28
15/18 + 90/28 is 85/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
15/18 = 15 × 14/18 × 14 = 210/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252 - Add the two like fractions:
210/252 + 810/252 = 210 + 810/252 = 1020/252 - 1020/252 simplified gives 85/21
- So, 15/18 + 90/28 = 85/21
In mixed form: 41/21
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