Subtract 21/90 from 40/28
1st number: 1 12/28, 2nd number: 21/90
40/28 - 21/90 is 251/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
40/28 = 40 × 45/28 × 45 = 1800/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
21/90 = 21 × 14/90 × 14 = 294/1260 - Subtract the two like fractions:
1800/1260 - 294/1260 = 1800 - 294/1260 = 1506/1260 - After reducing the fraction, the answer is 251/210
- In mixed form: 141/210
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