Subtract 90/50 from 70/63
1st number: 1 7/63, 2nd number: 1 40/50
70/63 - 90/50 is -31/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 50 is 3150
Next, find the equivalent fraction of both fractional numbers with denominator 3150 - For the 1st fraction, since 63 × 50 = 3150,
70/63 = 70 × 50/63 × 50 = 3500/3150 - Likewise, for the 2nd fraction, since 50 × 63 = 3150,
90/50 = 90 × 63/50 × 63 = 5670/3150 - Subtract the two like fractions:
3500/3150 - 5670/3150 = 3500 - 5670/3150 = -2170/3150 - After reducing the fraction, the answer is -31/45
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