Subtract 90/20 from 70/50
1st number: 1 20/50, 2nd number: 4 10/20
70/50 - 90/20 is -31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 50 × 2 = 100,
70/50 = 70 × 2/50 × 2 = 140/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
90/20 = 90 × 5/20 × 5 = 450/100 - Subtract the two like fractions:
140/100 - 450/100 = 140 - 450/100 = -310/100 - After reducing the fraction, the answer is -31/10
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