Subtract 42/49 from 4/16
4/16 - 42/49 is -17/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 49 is 784
Next, find the equivalent fraction of both fractional numbers with denominator 784 - For the 1st fraction, since 16 × 49 = 784,
4/16 = 4 × 49/16 × 49 = 196/784 - Likewise, for the 2nd fraction, since 49 × 16 = 784,
42/49 = 42 × 16/49 × 16 = 672/784 - Subtract the two like fractions:
196/784 - 672/784 = 196 - 672/784 = -476/784 - After reducing the fraction, the answer is -17/28
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