Subtract 21/90 from 6/48
6/48 - 21/90 is -13/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
6/48 = 6 × 15/48 × 15 = 90/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
21/90 = 21 × 8/90 × 8 = 168/720 - Subtract the two like fractions:
90/720 - 168/720 = 90 - 168/720 = -78/720 - After reducing the fraction, the answer is -13/120
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