Add 84/21 and 90/24
1st number: 4 0/21, 2nd number: 3 18/24
84/21 + 90/24 is 31/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
84/21 = 84 × 8/21 × 8 = 672/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
90/24 = 90 × 7/24 × 7 = 630/168 - Add the two like fractions:
672/168 + 630/168 = 672 + 630/168 = 1302/168 - 1302/168 simplified gives 31/4
- So, 84/21 + 90/24 = 31/4
In mixed form: 73/4
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