Subtract 10/56 from 12/90
12/90 - 10/56 is -19/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
12/90 = 12 × 28/90 × 28 = 336/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
10/56 = 10 × 45/56 × 45 = 450/2520 - Subtract the two like fractions:
336/2520 - 450/2520 = 336 - 450/2520 = -114/2520 - After reducing the fraction, the answer is -19/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90-10/56 12/90-20/56 36/90-10/56 12/90-30/56 60/90-10/56 12/90-50/56 84/90-10/56 12/90-70/56