Subtract 90/42 from 50/25
1st number: 2 0/25, 2nd number: 2 6/42
50/25 - 90/42 is -1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
50/25 = 50 × 42/25 × 42 = 2100/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
90/42 = 90 × 25/42 × 25 = 2250/1050 - Subtract the two like fractions:
2100/1050 - 2250/1050 = 2100 - 2250/1050 = -150/1050 - After reducing the fraction, the answer is -1/7
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