Subtract 40/21 from 60/72
1st number: 60/72, 2nd number: 1 19/21
60/72 - 40/21 is -15/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
60/72 = 60 × 7/72 × 7 = 420/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
40/21 = 40 × 24/21 × 24 = 960/504 - Subtract the two like fractions:
420/504 - 960/504 = 420 - 960/504 = -540/504 - After reducing the fraction, the answer is -15/14
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