Subtract 20/36 from 4/10
4/10 - 20/36 is -7/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 10 × 18 = 180,
4/10 = 4 × 18/10 × 18 = 72/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Subtract the two like fractions:
72/180 - 100/180 = 72 - 100/180 = -28/180 - After reducing the fraction, the answer is -7/45
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