Subtract 45/30 from 84/72
1st number: 1 12/72, 2nd number: 1 15/30
84/72 - 45/30 is -1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 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 30 × 12 = 360,
45/30 = 45 × 12/30 × 12 = 540/360 - Subtract the two like fractions:
420/360 - 540/360 = 420 - 540/360 = -120/360 - After reducing the fraction, the answer is -1/3
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