Subtract 20/7 from 45/64
1st number: 45/64, 2nd number: 2 6/7
45/64 - 20/7 is -965/448.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 7 is 448
Next, find the equivalent fraction of both fractional numbers with denominator 448 - For the 1st fraction, since 64 × 7 = 448,
45/64 = 45 × 7/64 × 7 = 315/448 - Likewise, for the 2nd fraction, since 7 × 64 = 448,
20/7 = 20 × 64/7 × 64 = 1280/448 - Subtract the two like fractions:
315/448 - 1280/448 = 315 - 1280/448 = -965/448
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