Subtract 21/72 from 90/56
1st number: 1 34/56, 2nd number: 21/72
90/56 - 21/72 is 221/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
90/56 = 90 × 9/56 × 9 = 810/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Subtract the two like fractions:
810/504 - 147/504 = 810 - 147/504 = 663/504 - After reducing the fraction, the answer is 221/168
- In mixed form: 153/168
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