Subtract 40/72 from 15/7
1st number: 2 1/7, 2nd number: 40/72
15/7 - 40/72 is 100/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
15/7 = 15 × 72/7 × 72 = 1080/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
40/72 = 40 × 7/72 × 7 = 280/504 - Subtract the two like fractions:
1080/504 - 280/504 = 1080 - 280/504 = 800/504 - After reducing the fraction, the answer is 100/63
- In mixed form: 137/63
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