Subtract 42/7 from 12/50, Solve 12/50

Subtract 42/7 from 12/50

1^st number: 12/50, 2^nd number: 6 0/7

12/50 - 42/7 is -144/25.

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

Next, find the equivalent fraction of both fractional numbers with denominator 350
For the 1st fraction, since 50 × 7 = 350,
12/50 = 12 × 7/50 × 7 = 84/350
Likewise, for the 2nd fraction, since 7 × 50 = 350,
42/7 = 42 × 50/7 × 50 = 2100/350
Subtract the two like fractions:
84/350 - 2100/350 = 84 - 2100/350 = -2016/350
After reducing the fraction, the answer is -144/25

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