Add 90/63 and 20/42
1st number: 1 27/63, 2nd number: 20/42
90/63 + 20/42 is 40/21.
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,
90/63 = 90 × 2/63 × 2 = 180/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
20/42 = 20 × 3/42 × 3 = 60/126 - Add the two like fractions:
180/126 + 60/126 = 180 + 60/126 = 240/126 - 240/126 simplified gives 40/21
- So, 90/63 + 20/42 = 40/21
In mixed form: 119/21
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