Subtract 84/40 from 84/72
1st number: 1 12/72, 2nd number: 2 4/40
84/72 - 84/40 is -14/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
84/40 = 84 × 9/40 × 9 = 756/360 - Subtract the two like fractions:
420/360 - 756/360 = 420 - 756/360 = -336/360 - After reducing the fraction, the answer is -14/15
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