Subtract 6/81 from 50/40, Solve 1 10/40

Subtract 6/81 from 50/40

1^st number: 1 10/40, 2^nd number: 6/81

50/40 - 6/81 is 127/108.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240

Next, find the equivalent fraction of both fractional numbers with denominator 3240
For the 1st fraction, since 40 × 81 = 3240,
50/40 = 50 × 81/40 × 81 = 4050/3240
Likewise, for the 2nd fraction, since 81 × 40 = 3240,
6/81 = 6 × 40/81 × 40 = 240/3240
Subtract the two like fractions:
4050/3240 - 240/3240 = 4050 - 240/3240 = 3810/3240
After reducing the fraction, the answer is 127/108
In mixed form: 119/108

MathStep (Works offline)

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