Subtract 48/21 from 8/18, Solve 8/18

Subtract 48/21 from 8/18

1^st number: 8/18, 2^nd number: 2 6/21

8/18 - 48/21 is -116/63.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
8/18 = 8 × 7/18 × 7 = 56/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
48/21 = 48 × 6/21 × 6 = 288/126
Subtract the two like fractions:
56/126 - 288/126 = 56 - 288/126 = -232/126
After reducing the fraction, the answer is -116/63

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