Subtract 7/20 from 18/64
18/64 - 7/20 is -11/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 20 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
18/64 = 18 × 5/64 × 5 = 90/320 - Likewise, for the 2nd fraction, since 20 × 16 = 320,
7/20 = 7 × 16/20 × 16 = 112/320 - Subtract the two like fractions:
90/320 - 112/320 = 90 - 112/320 = -22/320 - After reducing the fraction, the answer is -11/160
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