Subtract 7/75 from 21/18, Solve 1 3/18

Subtract 7/75 from 21/18

1^st number: 1 3/18, 2^nd number: 7/75

21/18 - 7/75 is 161/150.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 75 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 18 × 25 = 450,
21/18 = 21 × 25/18 × 25 = 525/450
Likewise, for the 2nd fraction, since 75 × 6 = 450,
7/75 = 7 × 6/75 × 6 = 42/450
Subtract the two like fractions:
525/450 - 42/450 = 525 - 42/450 = 483/450
After reducing the fraction, the answer is 161/150
In mixed form: 111/150

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