Add 90/72 and 45/16
1st number: 1 18/72, 2nd number: 2 13/16
90/72 + 45/16 is 65/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
90/72 = 90 × 2/72 × 2 = 180/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
45/16 = 45 × 9/16 × 9 = 405/144 - Add the two like fractions:
180/144 + 405/144 = 180 + 405/144 = 585/144 - 585/144 simplified gives 65/16
- So, 90/72 + 45/16 = 65/16
In mixed form: 41/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+90/16 90/72+45/32 90/72+45/48 90/72+45/80