Subtract 70/20 from 1/24, Solve 1/24

Subtract 70/20 from 1/24

1^st number: 1/24, 2^nd number: 3 10/20

1/24 - 70/20 is -83/24.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 24 × 5 = 120,
1/24 = 1 × 5/24 × 5 = 5/120
Likewise, for the 2nd fraction, since 20 × 6 = 120,
70/20 = 70 × 6/20 × 6 = 420/120
Subtract the two like fractions:
5/120 - 420/120 = 5 - 420/120 = -415/120
After reducing the fraction, the answer is -83/24

MathStep (Works offline)

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