Subtract 54/45 from 90/50, Solve 1 40/50

Subtract 54/45 from 90/50

1^st number: 1 40/50, 2^nd number: 1 9/45

90/50 - 54/45 is 3/5.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 50 × 9 = 450,
90/50 = 90 × 9/50 × 9 = 810/450
Likewise, for the 2nd fraction, since 45 × 10 = 450,
54/45 = 54 × 10/45 × 10 = 540/450
Subtract the two like fractions:
810/450 - 540/450 = 810 - 540/450 = 270/450
After reducing the fraction, the answer is 3/5

MathStep (Works offline)

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