Subtract 72/70 from 7/36
1st number: 7/36, 2nd number: 1 2/70
7/36 - 72/70 is -1051/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
7/36 = 7 × 35/36 × 35 = 245/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
72/70 = 72 × 18/70 × 18 = 1296/1260 - Subtract the two like fractions:
245/1260 - 1296/1260 = 245 - 1296/1260 = -1051/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/36-72/70 7/72-72/70 21/36-72/70 35/36-72/70 49/36-72/70