Add 80/60 and 8/45
1st number: 1 20/60, 2nd number: 8/45
80/60 + 8/45 is 68/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
80/60 = 80 × 3/60 × 3 = 240/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
8/45 = 8 × 4/45 × 4 = 32/180 - Add the two like fractions:
240/180 + 32/180 = 240 + 32/180 = 272/180 - 272/180 simplified gives 68/45
- So, 80/60 + 8/45 = 68/45
In mixed form: 123/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+16/45 80/60+8/90 80/60+24/45 80/60+40/45 80/60+56/45