Subtract 70/42 from 90/24
1st number: 3 18/24, 2nd number: 1 28/42
90/24 - 70/42 is 25/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
90/24 = 90 × 7/24 × 7 = 630/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
70/42 = 70 × 4/42 × 4 = 280/168 - Subtract the two like fractions:
630/168 - 280/168 = 630 - 280/168 = 350/168 - After reducing the fraction, the answer is 25/12
- In mixed form: 21/12
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