Subtract 70/45 from 80/63
1st number: 1 17/63, 2nd number: 1 25/45
80/63 - 70/45 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
80/63 = 80 × 5/63 × 5 = 400/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Subtract the two like fractions:
400/315 - 490/315 = 400 - 490/315 = -90/315 - After reducing the fraction, the answer is -2/7
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