Subtract 63/14 from 18/45, Solve 18/45

Subtract 63/14 from 18/45

1^st number: 18/45, 2^nd number: 4 7/14

18/45 - 63/14 is -41/10.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
18/45 = 18 × 14/45 × 14 = 252/630
Likewise, for the 2nd fraction, since 14 × 45 = 630,
63/14 = 63 × 45/14 × 45 = 2835/630
Subtract the two like fractions:
252/630 - 2835/630 = 252 - 2835/630 = -2583/630
After reducing the fraction, the answer is -41/10

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