Subtract 12/84 from 90/30
1st number: 3 0/30, 2nd number: 12/84
90/30 - 12/84 is 20/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
90/30 = 90 × 14/30 × 14 = 1260/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Subtract the two like fractions:
1260/420 - 60/420 = 1260 - 60/420 = 1200/420 - After reducing the fraction, the answer is 20/7
- In mixed form: 26/7
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