Subtract 18/54 from 48/21, Solve 2 6/21

Subtract 18/54 from 48/21

1^st number: 2 6/21, 2^nd number: 18/54

48/21 - 18/54 is 41/21.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
48/21 = 48 × 18/21 × 18 = 864/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378
Subtract the two like fractions:
864/378 - 126/378 = 864 - 126/378 = 738/378
After reducing the fraction, the answer is 41/21
In mixed form: 120/21

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