Subtract 84/18 from 7/72
1st number: 7/72, 2nd number: 4 12/18
7/72 - 84/18 is -329/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
7/72 = 7 × 1/72 × 1 = 7/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
84/18 = 84 × 4/18 × 4 = 336/72 - Subtract the two like fractions:
7/72 - 336/72 = 7 - 336/72 = -329/72
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