Subtract 2/56 from 1/30, Solve 1/30

Subtract 2/56 from 1/30

1/30 - 2/56 is -1/420.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 30 × 28 = 840,
1/30 = 1 × 28/30 × 28 = 28/840
Likewise, for the 2nd fraction, since 56 × 15 = 840,
2/56 = 2 × 15/56 × 15 = 30/840
Subtract the two like fractions:
28/840 - 30/840 = 28 - 30/840 = -2/840
After reducing the fraction, the answer is -1/420

MathStep (Works offline)

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