Subtract 15/90 from 4/10
4/10 - 15/90 is 7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
4/10 = 4 × 9/10 × 9 = 36/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Subtract the two like fractions:
36/90 - 15/90 = 36 - 15/90 = 21/90 - After reducing the fraction, the answer is 7/30
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