Subtract 75/54 from 70/84
1st number: 70/84, 2nd number: 1 21/54
70/84 - 75/54 is -5/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
70/84 = 70 × 9/84 × 9 = 630/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
75/54 = 75 × 14/54 × 14 = 1050/756 - Subtract the two like fractions:
630/756 - 1050/756 = 630 - 1050/756 = -420/756 - After reducing the fraction, the answer is -5/9
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