Subtract 81/45 from 3/35, Solve 3/35

Subtract 81/45 from 3/35

1^st number: 3/35, 2^nd number: 1 36/45

3/35 - 81/45 is -12/7.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 35 × 9 = 315,
3/35 = 3 × 9/35 × 9 = 27/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
81/45 = 81 × 7/45 × 7 = 567/315
Subtract the two like fractions:
27/315 - 567/315 = 27 - 567/315 = -540/315
After reducing the fraction, the answer is -12/7

MathStep (Works offline)

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