Subtract 75/63 from 98/12, Solve 8 2/12

Subtract 75/63 from 98/12

1^st number: 8 2/12, 2^nd number: 1 12/63

98/12 - 75/63 is 293/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
98/12 = 98 × 21/12 × 21 = 2058/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
75/63 = 75 × 4/63 × 4 = 300/252
Subtract the two like fractions:
2058/252 - 300/252 = 2058 - 300/252 = 1758/252
After reducing the fraction, the answer is 293/42
In mixed form: 641/42

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad