Add 72/8 and 90/45
1st number: 9 0/8, 2nd number: 2 0/45
72/8 + 90/45 is 11/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
72/8 = 72 × 45/8 × 45 = 3240/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
90/45 = 90 × 8/45 × 8 = 720/360 - Add the two like fractions:
3240/360 + 720/360 = 3240 + 720/360 = 3960/360 - 3960/360 simplified gives 11/1
- So, 72/8 + 90/45 = 11/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/16+90/45 72/24+90/45 72/40+90/45 72/56+90/45