Subtract 30/64 from 21/20
1st number: 1 1/20, 2nd number: 30/64
21/20 - 30/64 is 93/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 20 × 16 = 320,
21/20 = 21 × 16/20 × 16 = 336/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
30/64 = 30 × 5/64 × 5 = 150/320 - Subtract the two like fractions:
336/320 - 150/320 = 336 - 150/320 = 186/320 - After reducing the fraction, the answer is 93/160
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