Add 72/63 and 90/42
1st number: 1 9/63, 2nd number: 2 6/42
72/63 + 90/42 is 23/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
72/63 = 72 × 2/63 × 2 = 144/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
90/42 = 90 × 3/42 × 3 = 270/126 - Add the two like fractions:
144/126 + 270/126 = 144 + 270/126 = 414/126 - 414/126 simplified gives 23/7
- So, 72/63 + 90/42 = 23/7
In mixed form: 32/7
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