Subtract 90/8 from 42/28
1st number: 1 14/28, 2nd number: 11 2/8
42/28 - 90/8 is -39/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
42/28 = 42 × 2/28 × 2 = 84/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
90/8 = 90 × 7/8 × 7 = 630/56 - Subtract the two like fractions:
84/56 - 630/56 = 84 - 630/56 = -546/56 - After reducing the fraction, the answer is -39/4
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