Subtract 50/42 from 4/5, Solve 4/5 - 1 8/42 as a fraction

Subtract 50/42 from 4/5

1^st number: 4/5, 2^nd number: 1 8/42

4/5 - 50/42 is -41/105.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 5 × 42 = 210,
4/5 = 4 × 42/5 × 42 = 168/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
50/42 = 50 × 5/42 × 5 = 250/210
Subtract the two like fractions:
168/210 - 250/210 = 168 - 250/210 = -82/210
After reducing the fraction, the answer is -41/105

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