Subtract 72/40 from 12/70
1st number: 12/70, 2nd number: 1 32/40
12/70 - 72/40 is -57/35.
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,
12/70 = 12 × 4/70 × 4 = 48/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280 - Subtract the two like fractions:
48/280 - 504/280 = 48 - 504/280 = -456/280 - After reducing the fraction, the answer is -57/35
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