Subtract 72/63 from 2/8, Solve 2/8 - 1 9/63 as a fraction

Subtract 72/63 from 2/8

1^st number: 2/8, 2^nd number: 1 9/63

2/8 - 72/63 is -25/28.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 8 × 63 = 504,
2/8 = 2 × 63/8 × 63 = 126/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
72/63 = 72 × 8/63 × 8 = 576/504
Subtract the two like fractions:
126/504 - 576/504 = 126 - 576/504 = -450/504
After reducing the fraction, the answer is -25/28

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