Subtract 45/63 from 30/10, Solve 3 0/10

Subtract 45/63 from 30/10

1^st number: 3 0/10, 2^nd number: 45/63

30/10 - 45/63 is 16/7.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
30/10 = 30 × 63/10 × 63 = 1890/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
45/63 = 45 × 10/63 × 10 = 450/630
Subtract the two like fractions:
1890/630 - 450/630 = 1890 - 450/630 = 1440/630
After reducing the fraction, the answer is 16/7
In mixed form: 22/7

MathStep (Works offline)

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