Add 90/36 and 21/7
1st number: 2 18/36, 2nd number: 3 0/7
90/36 + 21/7 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 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 7 × 36 = 252,
21/7 = 21 × 36/7 × 36 = 756/252 - Add the two like fractions:
630/252 + 756/252 = 630 + 756/252 = 1386/252 - 1386/252 simplified gives 11/2
- So, 90/36 + 21/7 = 11/2
In mixed form: 51/2
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