Subtract 72/70 from 45/60
1st number: 45/60, 2nd number: 1 2/70
45/60 - 72/70 is -39/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
45/60 = 45 × 7/60 × 7 = 315/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
72/70 = 72 × 6/70 × 6 = 432/420 - Subtract the two like fractions:
315/420 - 432/420 = 315 - 432/420 = -117/420 - After reducing the fraction, the answer is -39/140
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Related: 90/60-72/70