Subtract 70/45 from 90/63
1st number: 1 27/63, 2nd number: 1 25/45
90/63 - 70/45 is -8/63.
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,
90/63 = 90 × 5/63 × 5 = 450/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
70/45 = 70 × 7/45 × 7 = 490/315 - Subtract the two like fractions:
450/315 - 490/315 = 450 - 490/315 = -40/315 - After reducing the fraction, the answer is -8/63
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Related: 90/63-70/90