Add 30/3 and 90/80, Solve 10 0/3 + 1 10/80 as a fraction

Add 30/3 and 90/80

1^st number: 10 0/3, 2^nd number: 1 10/80

30/3 + 90/80 is 89/8.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 3 × 80 = 240,
30/3 = 30 × 80/3 × 80 = 2400/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
90/80 = 90 × 3/80 × 3 = 270/240
Add the two like fractions:
2400/240 + 270/240 = 2400 + 270/240 = 2670/240
2670/240 simplified gives 89/8
So, 30/3 + 90/80 = 89/8
In mixed form: 111/8

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad