Subtract 21/45 from 2/48
2/48 - 21/45 is -17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
2/48 = 2 × 15/48 × 15 = 30/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
21/45 = 21 × 16/45 × 16 = 336/720 - Subtract the two like fractions:
30/720 - 336/720 = 30 - 336/720 = -306/720 - After reducing the fraction, the answer is -17/40
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