Subtract 18/21 from 90/48
1st number: 1 42/48, 2nd number: 18/21
90/48 - 18/21 is 57/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
90/48 = 90 × 7/48 × 7 = 630/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
18/21 = 18 × 16/21 × 16 = 288/336 - Subtract the two like fractions:
630/336 - 288/336 = 630 - 288/336 = 342/336 - After reducing the fraction, the answer is 57/56
- In mixed form: 11/56
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