Subtract 90/36 from 25/42
1st number: 25/42, 2nd number: 2 18/36
25/42 - 90/36 is -40/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
25/42 = 25 × 6/42 × 6 = 150/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252 - Subtract the two like fractions:
150/252 - 630/252 = 150 - 630/252 = -480/252 - After reducing the fraction, the answer is -40/21
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