Subtract 75/50 from 20/70, Solve 20/70

Subtract 75/50 from 20/70

1^st number: 20/70, 2^nd number: 1 25/50

20/70 - 75/50 is -17/14.

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,
75/50 = 75 × 7/50 × 7 = 525/350
Subtract the two like fractions:
100/350 - 525/350 = 100 - 525/350 = -425/350
After reducing the fraction, the answer is -17/14

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