Subtract 70/14 from 63/18, Solve 3 9/18

Subtract 70/14 from 63/18

1^st number: 3 9/18, 2^nd number: 5 0/14

63/18 - 70/14 is -3/2.

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,
63/18 = 63 × 7/18 × 7 = 441/126
Likewise, for the 2nd fraction, since 14 × 9 = 126,
70/14 = 70 × 9/14 × 9 = 630/126
Subtract the two like fractions:
441/126 - 630/126 = 441 - 630/126 = -189/126
After reducing the fraction, the answer is -3/2

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