Subtract 16/7 from 45/30
1st number: 1 15/30, 2nd number: 2 2/7
45/30 - 16/7 is -11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
16/7 = 16 × 30/7 × 30 = 480/210 - Subtract the two like fractions:
315/210 - 480/210 = 315 - 480/210 = -165/210 - After reducing the fraction, the answer is -11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-16/7 45/30-32/7 45/60-16/7 45/30-16/14 45/30-48/7 45/90-16/7 45/30-16/21 45/30-80/7 45/30-16/35 45/30-16/49