Add 72/90 and 3/16
72/90 + 3/16 is 79/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
72/90 = 72 × 8/90 × 8 = 576/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
3/16 = 3 × 45/16 × 45 = 135/720 - Add the two like fractions:
576/720 + 135/720 = 576 + 135/720 = 711/720 - 711/720 simplified gives 79/80
- So, 72/90 + 3/16 = 79/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+6/16 72/90+3/32 72/90+9/16 72/90+3/48 72/90+15/16 72/90+3/80 72/90+21/16