Subtract 63/7 from 10/18, Solve 10/18

Subtract 63/7 from 10/18

1^st number: 10/18, 2^nd number: 9 0/7

10/18 - 63/7 is -76/9.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126
Likewise, for the 2nd fraction, since 7 × 18 = 126,
63/7 = 63 × 18/7 × 18 = 1134/126
Subtract the two like fractions:
70/126 - 1134/126 = 70 - 1134/126 = -1064/126
After reducing the fraction, the answer is -76/9

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