Subtract 3/28 from 90/8
1st number: 11 2/8, 2nd number: 3/28
90/8 - 3/28 is 78/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 28 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
90/8 = 90 × 7/8 × 7 = 630/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
3/28 = 3 × 2/28 × 2 = 6/56 - Subtract the two like fractions:
630/56 - 6/56 = 630 - 6/56 = 624/56 - After reducing the fraction, the answer is 78/7
- In mixed form: 111/7
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