Subtract 12/10 from 20/72
1st number: 20/72, 2nd number: 1 2/10
20/72 - 12/10 is -83/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
12/10 = 12 × 36/10 × 36 = 432/360 - Subtract the two like fractions:
100/360 - 432/360 = 100 - 432/360 = -332/360 - After reducing the fraction, the answer is -83/90
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