Subtract 20/72 from 7/30
7/30 - 20/72 is -2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
7/30 = 7 × 12/30 × 12 = 84/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Subtract the two like fractions:
84/360 - 100/360 = 84 - 100/360 = -16/360 - After reducing the fraction, the answer is -2/45
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