Subtract 90/42 from 84/36
1st number: 2 12/36, 2nd number: 2 6/42
84/36 - 90/42 is 4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
84/36 = 84 × 7/36 × 7 = 588/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
90/42 = 90 × 6/42 × 6 = 540/252 - Subtract the two like fractions:
588/252 - 540/252 = 588 - 540/252 = 48/252 - After reducing the fraction, the answer is 4/21
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