Subtract 30/42 from 2/36
2/36 - 30/42 is -83/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
2/36 = 2 × 7/36 × 7 = 14/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
30/42 = 30 × 6/42 × 6 = 180/252 - Subtract the two like fractions:
14/252 - 180/252 = 14 - 180/252 = -166/252 - After reducing the fraction, the answer is -83/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/36-30/42 2/36-60/42 2/72-30/42 2/36-30/84 6/36-30/42 2/36-90/42 10/36-30/42 14/36-30/42