Subtract 90/32 from 18/28
1st number: 18/28, 2nd number: 2 26/32
18/28 - 90/32 is -243/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 28 × 8 = 224,
18/28 = 18 × 8/28 × 8 = 144/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
90/32 = 90 × 7/32 × 7 = 630/224 - Subtract the two like fractions:
144/224 - 630/224 = 144 - 630/224 = -486/224 - After reducing the fraction, the answer is -243/112
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