Subtract 21/14 from 70/18, Solve 3 16/18

Subtract 21/14 from 70/18

1^st number: 3 16/18, 2^nd number: 1 7/14

70/18 - 21/14 is 43/18.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126
Likewise, for the 2nd fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126
Subtract the two like fractions:
490/126 - 189/126 = 490 - 189/126 = 301/126
After reducing the fraction, the answer is 43/18
In mixed form: 27/18

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