Subtract 21/45 from 75/6, Solve 12 3/6

Subtract 21/45 from 75/6

1^st number: 12 3/6, 2^nd number: 21/45

75/6 - 21/45 is 361/30.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 45 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 6 × 15 = 90,
75/6 = 75 × 15/6 × 15 = 1125/90
Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90
Subtract the two like fractions:
1125/90 - 42/90 = 1125 - 42/90 = 1083/90
After reducing the fraction, the answer is 361/30
In mixed form: 121/30

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