Subtract 14/18 from 12/7, Solve 1 5/7

Subtract 14/18 from 12/7

1^st number: 1 5/7, 2^nd number: 14/18

12/7 - 14/18 is 59/63.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 7 × 18 = 126,
12/7 = 12 × 18/7 × 18 = 216/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
14/18 = 14 × 7/18 × 7 = 98/126
Subtract the two like fractions:
216/126 - 98/126 = 216 - 98/126 = 118/126
After reducing the fraction, the answer is 59/63

MathStep (Works offline)

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