Subtract 25/30 from 60/21, Solve 2 18/21

Subtract 25/30 from 60/21

1^st number: 2 18/21, 2^nd number: 25/30

60/21 - 25/30 is 85/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
60/21 = 60 × 10/21 × 10 = 600/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
25/30 = 25 × 7/30 × 7 = 175/210
Subtract the two like fractions:
600/210 - 175/210 = 600 - 175/210 = 425/210
After reducing the fraction, the answer is 85/42
In mixed form: 21/42

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