Subtract 70/50 from 1/7, Solve 1/7 - 1 20/50 as a fraction

Subtract 70/50 from 1/7

1^st number: 1/7, 2^nd number: 1 20/50

1/7 - 70/50 is -44/35.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 50 is 350

Next, find the equivalent fraction of both fractional numbers with denominator 350
For the 1st fraction, since 7 × 50 = 350,
1/7 = 1 × 50/7 × 50 = 50/350
Likewise, for the 2nd fraction, since 50 × 7 = 350,
70/50 = 70 × 7/50 × 7 = 490/350
Subtract the two like fractions:
50/350 - 490/350 = 50 - 490/350 = -440/350
After reducing the fraction, the answer is -44/35

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