Subtract 1/40 from 63/70
63/70 - 1/40 is 7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
63/70 = 63 × 4/70 × 4 = 252/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Subtract the two like fractions:
252/280 - 7/280 = 252 - 7/280 = 245/280 - After reducing the fraction, the answer is 7/8
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