Subtract 90/28 from 42/4
1st number: 10 2/4, 2nd number: 3 6/28
42/4 - 90/28 is 51/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
42/4 = 42 × 7/4 × 7 = 294/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
90/28 = 90 × 1/28 × 1 = 90/28 - Subtract the two like fractions:
294/28 - 90/28 = 294 - 90/28 = 204/28 - After reducing the fraction, the answer is 51/7
- In mixed form: 72/7
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