Subtract 12/70 from 40/3, Solve 13 1/3

Subtract 12/70 from 40/3

1^st number: 13 1/3, 2^nd number: 12/70

40/3 - 12/70 is 1382/105.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 3 × 70 = 210,
40/3 = 40 × 70/3 × 70 = 2800/210
Likewise, for the 2nd fraction, since 70 × 3 = 210,
12/70 = 12 × 3/70 × 3 = 36/210
Subtract the two like fractions:
2800/210 - 36/210 = 2800 - 36/210 = 2764/210
After reducing the fraction, the answer is 1382/105
In mixed form: 1317/105

MathStep (Works offline)

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