Subtract 18/63 from 27/10, Solve 2 7/10

Subtract 18/63 from 27/10

1^st number: 2 7/10, 2^nd number: 18/63

27/10 - 18/63 is 169/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
27/10 = 27 × 63/10 × 63 = 1701/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
18/63 = 18 × 10/63 × 10 = 180/630
Subtract the two like fractions:
1701/630 - 180/630 = 1701 - 180/630 = 1521/630
After reducing the fraction, the answer is 169/70
In mixed form: 229/70

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