Subtract 80/63 from 2/8, Solve 2/8 - 1 17/63 as a fraction

Subtract 80/63 from 2/8

1^st number: 2/8, 2^nd number: 1 17/63

2/8 - 80/63 is -257/252.

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,
80/63 = 80 × 8/63 × 8 = 640/504
Subtract the two like fractions:
126/504 - 640/504 = 126 - 640/504 = -514/504
After reducing the fraction, the answer is -257/252

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