Subtract 12/16 from 3/90
3/90 - 12/16 is -43/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
3/90 = 3 × 8/90 × 8 = 24/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
12/16 = 12 × 45/16 × 45 = 540/720 - Subtract the two like fractions:
24/720 - 540/720 = 24 - 540/720 = -516/720 - After reducing the fraction, the answer is -43/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90-12/16 3/90-24/16 3/90-12/32 9/90-12/16 3/90-36/16 3/90-12/48 15/90-12/16 3/90-60/16 3/90-12/80 21/90-12/16 3/90-84/16