Subtract 40/28 from 80/90
1st number: 80/90, 2nd number: 1 12/28
80/90 - 40/28 is -34/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
80/90 = 80 × 14/90 × 14 = 1120/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
40/28 = 40 × 45/28 × 45 = 1800/1260 - Subtract the two like fractions:
1120/1260 - 1800/1260 = 1120 - 1800/1260 = -680/1260 - After reducing the fraction, the answer is -34/63
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