Subtract 70/42 from 30/63
1st number: 30/63, 2nd number: 1 28/42
30/63 - 70/42 is -25/21.
Steps for subtracting 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,
30/63 = 30 × 2/63 × 2 = 60/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126 - Subtract the two like fractions:
60/126 - 210/126 = 60 - 210/126 = -150/126 - After reducing the fraction, the answer is -25/21
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