Subtract 21/36 from 90/28
1st number: 3 6/28, 2nd number: 21/36
90/28 - 21/36 is 221/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
90/28 = 90 × 9/28 × 9 = 810/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Subtract the two like fractions:
810/252 - 147/252 = 810 - 147/252 = 663/252 - After reducing the fraction, the answer is 221/84
- In mixed form: 253/84
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