Add 80/21 and 90/24
1st number: 3 17/21, 2nd number: 3 18/24
80/21 + 90/24 is 635/84.
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,
80/21 = 80 × 8/21 × 8 = 640/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
90/24 = 90 × 7/24 × 7 = 630/168 - Add the two like fractions:
640/168 + 630/168 = 640 + 630/168 = 1270/168 - 1270/168 simplified gives 635/84
- So, 80/21 + 90/24 = 635/84
In mixed form: 747/84
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