Subtract 70/8 from 45/28
1st number: 1 17/28, 2nd number: 8 6/8
45/28 - 70/8 is -50/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
45/28 = 45 × 2/28 × 2 = 90/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
70/8 = 70 × 7/8 × 7 = 490/56 - Subtract the two like fractions:
90/56 - 490/56 = 90 - 490/56 = -400/56 - After reducing the fraction, the answer is -50/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-70/8 45/56-70/8 45/28-70/16 45/84-70/8 45/28-70/24 45/28-70/40 45/28-70/56