Subtract 50/63 from 45/42, Solve 1 3/42

Subtract 50/63 from 45/42

1^st number: 1 3/42, 2^nd number: 50/63

45/42 - 50/63 is 5/18.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
45/42 = 45 × 3/42 × 3 = 135/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
50/63 = 50 × 2/63 × 2 = 100/126
Subtract the two like fractions:
135/126 - 100/126 = 135 - 100/126 = 35/126
After reducing the fraction, the answer is 5/18

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