Subtract 6/45 from 80/70, Solve 1 10/70

Subtract 6/45 from 80/70

1^st number: 1 10/70, 2^nd number: 6/45

80/70 - 6/45 is 106/105.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
6/45 = 6 × 14/45 × 14 = 84/630
Subtract the two like fractions:
720/630 - 84/630 = 720 - 84/630 = 636/630
After reducing the fraction, the answer is 106/105
In mixed form: 11/105

MathStep (Works offline)

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