Subtract 50/35 from 9/90, Solve 9/90

Subtract 50/35 from 9/90

1^st number: 9/90, 2^nd number: 1 15/35

9/90 - 50/35 is -93/70.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
9/90 = 9 × 7/90 × 7 = 63/630
Likewise, for the 2nd fraction, since 35 × 18 = 630,
50/35 = 50 × 18/35 × 18 = 900/630
Subtract the two like fractions:
63/630 - 900/630 = 63 - 900/630 = -837/630
After reducing the fraction, the answer is -93/70

MathStep (Works offline)

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