Subtract 12/8 from 49/90
1st number: 49/90, 2nd number: 1 4/8
49/90 - 12/8 is -43/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
49/90 = 49 × 4/90 × 4 = 196/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
12/8 = 12 × 45/8 × 45 = 540/360 - Subtract the two like fractions:
196/360 - 540/360 = 196 - 540/360 = -344/360 - After reducing the fraction, the answer is -43/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/90-12/8 49/90-24/8 49/90-12/16 49/90-36/8 49/90-12/24 49/90-60/8 49/90-12/40 49/90-84/8 49/90-12/56