Add 72/16 and 90/5
1st number: 4 8/16, 2nd number: 18 0/5
72/16 + 90/5 is 45/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
72/16 = 72 × 5/16 × 5 = 360/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
90/5 = 90 × 16/5 × 16 = 1440/80 - Add the two like fractions:
360/80 + 1440/80 = 360 + 1440/80 = 1800/80 - 1800/80 simplified gives 45/2
- So, 72/16 + 90/5 = 45/2
In mixed form: 221/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/32+90/5 72/16+90/10 72/48+90/5 72/16+90/15 72/80+90/5 72/16+90/25 72/16+90/35