Subtract 72/40 from 64/70
1st number: 64/70, 2nd number: 1 32/40
64/70 - 72/40 is -31/35.
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,
64/70 = 64 × 4/70 × 4 = 256/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280 - Subtract the two like fractions:
256/280 - 504/280 = 256 - 504/280 = -248/280 - After reducing the fraction, the answer is -31/35
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