Add 40/56 and 4/90
40/56 + 4/90 is 239/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
40/56 = 40 × 45/56 × 45 = 1800/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
4/90 = 4 × 28/90 × 28 = 112/2520 - Add the two like fractions:
1800/2520 + 112/2520 = 1800 + 112/2520 = 1912/2520 - 1912/2520 simplified gives 239/315
- So, 40/56 + 4/90 = 239/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56+4/90 40/56+8/90 40/56+12/90 40/56+20/90 40/56+28/90