Subtract 75/35 from 72/84
1st number: 72/84, 2nd number: 2 5/35
72/84 - 75/35 is -9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
72/84 = 72 × 5/84 × 5 = 360/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
75/35 = 75 × 12/35 × 12 = 900/420 - Subtract the two like fractions:
360/420 - 900/420 = 360 - 900/420 = -540/420 - After reducing the fraction, the answer is -9/7
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