Add 21/90 and 35/28
1st number: 21/90, 2nd number: 1 7/28
21/90 + 35/28 is 89/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
21/90 = 21 × 14/90 × 14 = 294/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
35/28 = 35 × 45/28 × 45 = 1575/1260 - Add the two like fractions:
294/1260 + 1575/1260 = 294 + 1575/1260 = 1869/1260 - 1869/1260 simplified gives 89/60
- So, 21/90 + 35/28 = 89/60
In mixed form: 129/60
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