Subtract 84/20 from 7/49
1st number: 7/49, 2nd number: 4 4/20
7/49 - 84/20 is -142/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
7/49 = 7 × 20/49 × 20 = 140/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
84/20 = 84 × 49/20 × 49 = 4116/980 - Subtract the two like fractions:
140/980 - 4116/980 = 140 - 4116/980 = -3976/980 - After reducing the fraction, the answer is -142/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/49-84/20 7/98-84/20 7/49-84/40 21/49-84/20 7/49-84/60 35/49-84/20