Subtract 70/18 from 42/63
1st number: 42/63, 2nd number: 3 16/18
42/63 - 70/18 is -29/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
42/63 = 42 × 2/63 × 2 = 84/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126 - Subtract the two like fractions:
84/126 - 490/126 = 84 - 490/126 = -406/126 - After reducing the fraction, the answer is -29/9
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