Subtract 6/75 from 21/30, Solve 21/30

Subtract 6/75 from 21/30

21/30 - 6/75 is 31/50.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 75 is 150

Next, find the equivalent fraction of both fractional numbers with denominator 150
For the 1st fraction, since 30 × 5 = 150,
21/30 = 21 × 5/30 × 5 = 105/150
Likewise, for the 2nd fraction, since 75 × 2 = 150,
6/75 = 6 × 2/75 × 2 = 12/150
Subtract the two like fractions:
105/150 - 12/150 = 105 - 12/150 = 93/150
After reducing the fraction, the answer is 31/50

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