Subtract 36/10 from 90/84
1st number: 1 6/84, 2nd number: 3 6/10
90/84 - 36/10 is -177/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
36/10 = 36 × 42/10 × 42 = 1512/420 - Subtract the two like fractions:
450/420 - 1512/420 = 450 - 1512/420 = -1062/420 - After reducing the fraction, the answer is -177/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84-72/10 90/84-36/20 90/84-36/30 90/84-36/50 90/84-36/70