Subtract 28/32 from 72/70
1st number: 1 2/70, 2nd number: 28/32
72/70 - 28/32 is 43/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
72/70 = 72 × 16/70 × 16 = 1152/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
28/32 = 28 × 35/32 × 35 = 980/1120 - Subtract the two like fractions:
1152/1120 - 980/1120 = 1152 - 980/1120 = 172/1120 - After reducing the fraction, the answer is 43/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70-56/32 72/70-28/64 72/70-84/32 72/70-28/96