Add 72/90 and 8/54
72/90 + 8/54 is 128/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
72/90 = 72 × 3/90 × 3 = 216/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
8/54 = 8 × 5/54 × 5 = 40/270 - Add the two like fractions:
216/270 + 40/270 = 216 + 40/270 = 256/270 - 256/270 simplified gives 128/135
- So, 72/90 + 8/54 = 128/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+16/54 72/90+24/54 72/90+40/54 72/90+56/54