Add 40/90 and 18/48
40/90 + 18/48 is 59/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
40/90 = 40 × 8/90 × 8 = 320/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
18/48 = 18 × 15/48 × 15 = 270/720 - Add the two like fractions:
320/720 + 270/720 = 320 + 270/720 = 590/720 - 590/720 simplified gives 59/72
- So, 40/90 + 18/48 = 59/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+18/48 40/90+36/48 40/90+18/96 40/90+54/48 40/90+90/48