Add 40/42 and 12/63
40/42 + 12/63 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
40/42 = 40 × 3/42 × 3 = 120/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
12/63 = 12 × 2/63 × 2 = 24/126 - Add the two like fractions:
120/126 + 24/126 = 120 + 24/126 = 144/126 - 144/126 simplified gives 8/7
- So, 40/42 + 12/63 = 8/7
In mixed form: 11/7
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