Subtract 80/28 from 90/63
1st number: 1 27/63, 2nd number: 2 24/28
90/63 - 80/28 is -10/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
80/28 = 80 × 9/28 × 9 = 720/252 - Subtract the two like fractions:
360/252 - 720/252 = 360 - 720/252 = -360/252 - After reducing the fraction, the answer is -10/7
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