Subtract 40/63 from 72/42
1st number: 1 30/42, 2nd number: 40/63
72/42 - 40/63 is 68/63.
Steps for subtracting 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,
72/42 = 72 × 3/42 × 3 = 216/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
40/63 = 40 × 2/63 × 2 = 80/126 - Subtract the two like fractions:
216/126 - 80/126 = 216 - 80/126 = 136/126 - After reducing the fraction, the answer is 68/63
- In mixed form: 15/63
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