Subtract 42/50 from 72/70
1st number: 1 2/70, 2nd number: 42/50
72/70 - 42/50 is 33/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
72/70 = 72 × 5/70 × 5 = 360/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
42/50 = 42 × 7/50 × 7 = 294/350 - Subtract the two like fractions:
360/350 - 294/350 = 360 - 294/350 = 66/350 - After reducing the fraction, the answer is 33/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70-84/50