Subtract 9/35 from 63/18, Solve 3 9/18

Subtract 9/35 from 63/18

1^st number: 3 9/18, 2^nd number: 9/35

63/18 - 9/35 is 227/70.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 35 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 18 × 35 = 630,
63/18 = 63 × 35/18 × 35 = 2205/630
Likewise, for the 2nd fraction, since 35 × 18 = 630,
9/35 = 9 × 18/35 × 18 = 162/630
Subtract the two like fractions:
2205/630 - 162/630 = 2205 - 162/630 = 2043/630
After reducing the fraction, the answer is 227/70
In mixed form: 317/70

MathStep (Works offline)

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