Subtract 90/48 from 3/10, Solve 3/10

Subtract 90/48 from 3/10

1^st number: 3/10, 2^nd number: 1 42/48

3/10 - 90/48 is -63/40.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 48 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 10 × 24 = 240,
3/10 = 3 × 24/10 × 24 = 72/240
Likewise, for the 2nd fraction, since 48 × 5 = 240,
90/48 = 90 × 5/48 × 5 = 450/240
Subtract the two like fractions:
72/240 - 450/240 = 72 - 450/240 = -378/240
After reducing the fraction, the answer is -63/40

MathStep (Works offline)

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