Subtract 4/9 from 50/42, Solve 1 8/42

Subtract 4/9 from 50/42

1^st number: 1 8/42, 2^nd number: 4/9

50/42 - 4/9 is 47/63.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
50/42 = 50 × 3/42 × 3 = 150/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
4/9 = 4 × 14/9 × 14 = 56/126
Subtract the two like fractions:
150/126 - 56/126 = 150 - 56/126 = 94/126
After reducing the fraction, the answer is 47/63

MathStep (Works offline)

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