Add 72/21 and 80/24
1st number: 3 9/21, 2nd number: 3 8/24
72/21 + 80/24 is 142/21.
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,
72/21 = 72 × 8/21 × 8 = 576/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
80/24 = 80 × 7/24 × 7 = 560/168 - Add the two like fractions:
576/168 + 560/168 = 576 + 560/168 = 1136/168 - 1136/168 simplified gives 142/21
- So, 72/21 + 80/24 = 142/21
In mixed form: 616/21
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