Subtract 49/32 from 40/84
1st number: 40/84, 2nd number: 1 17/32
40/84 - 49/32 is -709/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 84 × 8 = 672,
40/84 = 40 × 8/84 × 8 = 320/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
49/32 = 49 × 21/32 × 21 = 1029/672 - Subtract the two like fractions:
320/672 - 1029/672 = 320 - 1029/672 = -709/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-49/32 40/84-98/32 40/84-49/64 40/84-49/96