Subtract 90/63 from 84/18
1st number: 4 12/18, 2nd number: 1 27/63
84/18 - 90/63 is 68/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
90/63 = 90 × 2/63 × 2 = 180/126 - Subtract the two like fractions:
588/126 - 180/126 = 588 - 180/126 = 408/126 - After reducing the fraction, the answer is 68/21
- In mixed form: 35/21
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