Add 21/63 and 90/28
1st number: 21/63, 2nd number: 3 6/28
21/63 + 90/28 is 149/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252 - Add the two like fractions:
84/252 + 810/252 = 84 + 810/252 = 894/252 - 894/252 simplified gives 149/42
- So, 21/63 + 90/28 = 149/42
In mixed form: 323/42
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