Subtract 90/50 from 70/40
1st number: 1 30/40, 2nd number: 1 40/50
70/40 - 90/50 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
70/40 = 70 × 5/40 × 5 = 350/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
90/50 = 90 × 4/50 × 4 = 360/200 - Subtract the two like fractions:
350/200 - 360/200 = 350 - 360/200 = -10/200 - After reducing the fraction, the answer is -1/20
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