Add 54/90 and 7/80
54/90 + 7/80 is 11/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
54/90 = 54 × 8/90 × 8 = 432/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720 - Add the two like fractions:
432/720 + 63/720 = 432 + 63/720 = 495/720 - 495/720 simplified gives 11/16
- So, 54/90 + 7/80 = 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90+14/80 54/90+21/80 54/90+35/80 54/90+49/80