Subtract 7/84 from 90/60
1st number: 1 30/60, 2nd number: 7/84
90/60 - 7/84 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Subtract the two like fractions:
630/420 - 35/420 = 630 - 35/420 = 595/420 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
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