Subtract 42/16 from 80/42
1st number: 1 38/42, 2nd number: 2 10/16
80/42 - 42/16 is -121/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
80/42 = 80 × 8/42 × 8 = 640/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
42/16 = 42 × 21/16 × 21 = 882/336 - Subtract the two like fractions:
640/336 - 882/336 = 640 - 882/336 = -242/336 - After reducing the fraction, the answer is -121/168
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