Add 90/54 and 8/21
1st number: 1 36/54, 2nd number: 8/21
90/54 + 8/21 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
8/21 = 8 × 18/21 × 18 = 144/378 - Add the two like fractions:
630/378 + 144/378 = 630 + 144/378 = 774/378 - 774/378 simplified gives 43/21
- So, 90/54 + 8/21 = 43/21
In mixed form: 21/21
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