Subtract 27/16 from 42/70
1st number: 42/70, 2nd number: 1 11/16
42/70 - 27/16 is -87/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
42/70 = 42 × 8/70 × 8 = 336/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
27/16 = 27 × 35/16 × 35 = 945/560 - Subtract the two like fractions:
336/560 - 945/560 = 336 - 945/560 = -609/560 - After reducing the fraction, the answer is -87/80
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