Subtract 90/45 from 40/63
1st number: 40/63, 2nd number: 2 0/45
40/63 - 90/45 is -86/63.
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,
40/63 = 40 × 5/63 × 5 = 200/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
90/45 = 90 × 7/45 × 7 = 630/315 - Subtract the two like fractions:
200/315 - 630/315 = 200 - 630/315 = -430/315 - After reducing the fraction, the answer is -86/63
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Related: 80/63-90/45