Subtract 84/7 from 7/45
1st number: 7/45, 2nd number: 12 0/7
7/45 - 84/7 is -533/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
7/45 = 7 × 7/45 × 7 = 49/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
84/7 = 84 × 45/7 × 45 = 3780/315 - Subtract the two like fractions:
49/315 - 3780/315 = 49 - 3780/315 = -3731/315 - After reducing the fraction, the answer is -533/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-84/7 7/90-84/7 7/45-84/14 21/45-84/7 7/45-84/21 35/45-84/7 7/45-84/35 49/45-84/7 7/45-84/49