Subtract 63/70 from 16/40
16/40 - 63/70 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
16/40 = 16 × 7/40 × 7 = 112/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
63/70 = 63 × 4/70 × 4 = 252/280 - Subtract the two like fractions:
112/280 - 252/280 = 112 - 252/280 = -140/280 - After reducing the fraction, the answer is -1/2
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