Subtract 90/7 from 48/36
1st number: 1 12/36, 2nd number: 12 6/7
48/36 - 90/7 is -242/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
48/36 = 48 × 7/36 × 7 = 336/252 - Likewise, for the 2nd fraction, since 7 × 36 = 252,
90/7 = 90 × 36/7 × 36 = 3240/252 - Subtract the two like fractions:
336/252 - 3240/252 = 336 - 3240/252 = -2904/252 - After reducing the fraction, the answer is -242/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/36-90/7 48/72-90/7 48/36-90/14 48/36-90/21 48/36-90/35 48/36-90/49