Subtract 45/27 from 98/40, Solve 2 18/40

Subtract 45/27 from 98/40

1^st number: 2 18/40, 2^nd number: 1 18/27

98/40 - 45/27 is 47/60.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080

Next, find the equivalent fraction of both fractional numbers with denominator 1080
For the 1st fraction, since 40 × 27 = 1080,
98/40 = 98 × 27/40 × 27 = 2646/1080
Likewise, for the 2nd fraction, since 27 × 40 = 1080,
45/27 = 45 × 40/27 × 40 = 1800/1080
Subtract the two like fractions:
2646/1080 - 1800/1080 = 2646 - 1800/1080 = 846/1080
After reducing the fraction, the answer is 47/60

MathStep (Works offline)

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