Add 90/36 and 8/21
1st number: 2 18/36, 2nd number: 8/21
90/36 + 8/21 is 121/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
8/21 = 8 × 12/21 × 12 = 96/252 - Add the two like fractions:
630/252 + 96/252 = 630 + 96/252 = 726/252 - 726/252 simplified gives 121/42
- So, 90/36 + 8/21 = 121/42
In mixed form: 237/42
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