Subtract 9/45 from 75/42, Solve 1 33/42

Subtract 9/45 from 75/42

1^st number: 1 33/42, 2^nd number: 9/45

75/42 - 9/45 is 111/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
75/42 = 75 × 15/42 × 15 = 1125/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
9/45 = 9 × 14/45 × 14 = 126/630
Subtract the two like fractions:
1125/630 - 126/630 = 1125 - 126/630 = 999/630
After reducing the fraction, the answer is 111/70
In mixed form: 141/70

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