Subtract 56/64 from 20/70
20/70 - 56/64 is -33/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 64 is 2240
Next, find the equivalent fraction of both fractional numbers with denominator 2240 - For the 1st fraction, since 70 × 32 = 2240,
20/70 = 20 × 32/70 × 32 = 640/2240 - Likewise, for the 2nd fraction, since 64 × 35 = 2240,
56/64 = 56 × 35/64 × 35 = 1960/2240 - Subtract the two like fractions:
640/2240 - 1960/2240 = 640 - 1960/2240 = -1320/2240 - After reducing the fraction, the answer is -33/56
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