Subtract 42/9 from 40/50
1st number: 40/50, 2nd number: 4 6/9
40/50 - 42/9 is -58/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
40/50 = 40 × 9/50 × 9 = 360/450 - Likewise, for the 2nd fraction, since 9 × 50 = 450,
42/9 = 42 × 50/9 × 50 = 2100/450 - Subtract the two like fractions:
360/450 - 2100/450 = 360 - 2100/450 = -1740/450 - After reducing the fraction, the answer is -58/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50-42/9 40/50-84/9 40/50-42/18 40/50-42/27 40/50-42/45 40/50-42/63