Subtract 21/18 from 7/16, Solve 7/16

Subtract 21/18 from 7/16

1^st number: 7/16, 2^nd number: 1 3/18

7/16 - 21/18 is -35/48.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144

Next, find the equivalent fraction of both fractional numbers with denominator 144
For the 1st fraction, since 16 × 9 = 144,
7/16 = 7 × 9/16 × 9 = 63/144
Likewise, for the 2nd fraction, since 18 × 8 = 144,
21/18 = 21 × 8/18 × 8 = 168/144
Subtract the two like fractions:
63/144 - 168/144 = 63 - 168/144 = -105/144
After reducing the fraction, the answer is -35/48

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