Subtract 42/50 from 20/70
20/70 - 42/50 is -97/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
20/70 = 20 × 5/70 × 5 = 100/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
42/50 = 42 × 7/50 × 7 = 294/350 - Subtract the two like fractions:
100/350 - 294/350 = 100 - 294/350 = -194/350 - After reducing the fraction, the answer is -97/175
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