Add 75/80 and 30/72
75/80 + 30/72 is 65/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
75/80 = 75 × 9/80 × 9 = 675/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
30/72 = 30 × 10/72 × 10 = 300/720 - Add the two like fractions:
675/720 + 300/720 = 675 + 300/720 = 975/720 - 975/720 simplified gives 65/48
- So, 75/80 + 30/72 = 65/48
In mixed form: 117/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/80+60/72 75/80+90/72