Subtract 28/70 from 12/64
12/64 - 28/70 is -17/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 70 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 64 × 35 = 2240,
12/64 = 12 × 35/64 × 35 = 420/2240 - Likewise, for the 2nd fraction, since 70 × 32 = 2240,
28/70 = 28 × 32/70 × 32 = 896/2240 - Subtract the two like fractions:
420/2240 - 896/2240 = 420 - 896/2240 = -476/2240 - After reducing the fraction, the answer is -17/80
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