Subtract 12/30 from 35/10, Solve 3 5/10

Subtract 12/30 from 35/10

1^st number: 3 5/10, 2^nd number: 12/30

35/10 - 12/30 is 31/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 10 × 3 = 30,
35/10 = 35 × 3/10 × 3 = 105/30
Likewise, for the 2nd fraction, since 30 × 1 = 30,
12/30 = 12 × 1/30 × 1 = 12/30
Subtract the two like fractions:
105/30 - 12/30 = 105 - 12/30 = 93/30
After reducing the fraction, the answer is 31/10
In mixed form: 31/10

MathStep (Works offline)

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