Subtract 90/40 from 7/6, Solve 1 1/6

Subtract 90/40 from 7/6

1^st number: 1 1/6, 2^nd number: 2 10/40

7/6 - 90/40 is -13/12.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 6 × 20 = 120,
7/6 = 7 × 20/6 × 20 = 140/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120
Subtract the two like fractions:
140/120 - 270/120 = 140 - 270/120 = -130/120
After reducing the fraction, the answer is -13/12

MathStep (Works offline)

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