Subtract 90/45 from 28/63
1st number: 28/63, 2nd number: 2 0/45
28/63 - 90/45 is -14/9.
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,
28/63 = 28 × 5/63 × 5 = 140/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
90/45 = 90 × 7/45 × 7 = 630/315 - Subtract the two like fractions:
140/315 - 630/315 = 140 - 630/315 = -490/315 - After reducing the fraction, the answer is -14/9
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