Add 90/60 and 72/80
1st number: 1 30/60, 2nd number: 72/80
90/60 + 72/80 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
90/60 = 90 × 4/60 × 4 = 360/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
72/80 = 72 × 3/80 × 3 = 216/240 - Add the two like fractions:
360/240 + 216/240 = 360 + 216/240 = 576/240 - 576/240 simplified gives 12/5
- So, 90/60 + 72/80 = 12/5
In mixed form: 22/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: