Subtract 84/18 from 32/21, Solve 1 11/21

Subtract 84/18 from 32/21

1^st number: 1 11/21, 2^nd number: 4 12/18

32/21 - 84/18 is -22/7.

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

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
32/21 = 32 × 6/21 × 6 = 192/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126
Subtract the two like fractions:
192/126 - 588/126 = 192 - 588/126 = -396/126
After reducing the fraction, the answer is -22/7

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