Subtract 18/64 from 20/40
20/40 - 18/64 is 7/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 40 × 8 = 320,
20/40 = 20 × 8/40 × 8 = 160/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
18/64 = 18 × 5/64 × 5 = 90/320 - Subtract the two like fractions:
160/320 - 90/320 = 160 - 90/320 = 70/320 - After reducing the fraction, the answer is 7/32
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