Subtract 35/7 from 45/15, Solve 3 0/15

Subtract 35/7 from 45/15

1^st number: 3 0/15, 2^nd number: 5 0/7

45/15 - 35/7 is -2/1.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
45/15 = 45 × 7/15 × 7 = 315/105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
35/7 = 35 × 15/7 × 15 = 525/105
Subtract the two like fractions:
315/105 - 525/105 = 315 - 525/105 = -210/105
After reducing the fraction, the answer is -2/1

MathStep (Works offline)

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