Subtract 90/50 from 4/7
1st number: 4/7, 2nd number: 1 40/50
4/7 - 90/50 is -43/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 7 × 50 = 350,
4/7 = 4 × 50/7 × 50 = 200/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
90/50 = 90 × 7/50 × 7 = 630/350 - Subtract the two like fractions:
200/350 - 630/350 = 200 - 630/350 = -430/350 - After reducing the fraction, the answer is -43/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-90/50 4/14-90/50 12/7-90/50 4/21-90/50 20/7-90/50 4/35-90/50 28/7-90/50 4/49-90/50