Subtract 21/90 from 42/24
1st number: 1 18/24, 2nd number: 21/90
42/24 - 21/90 is 91/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
42/24 = 42 × 15/24 × 15 = 630/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Subtract the two like fractions:
630/360 - 84/360 = 630 - 84/360 = 546/360 - After reducing the fraction, the answer is 91/60
- In mixed form: 131/60
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