Subtract 2/40 from 28/64
28/64 - 2/40 is 31/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 40 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
28/64 = 28 × 5/64 × 5 = 140/320 - Likewise, for the 2nd fraction, since 40 × 8 = 320,
2/40 = 2 × 8/40 × 8 = 16/320 - Subtract the two like fractions:
140/320 - 16/320 = 140 - 16/320 = 124/320 - After reducing the fraction, the answer is 31/80
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