Subtract 90/84 from 6/10, Solve 6/10

Subtract 90/84 from 6/10

1^st number: 6/10, 2^nd number: 1 6/84

6/10 - 90/84 is -33/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 10 × 42 = 420,
6/10 = 6 × 42/10 × 42 = 252/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420
Subtract the two like fractions:
252/420 - 450/420 = 252 - 450/420 = -198/420
After reducing the fraction, the answer is -33/70

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad