Add 30/14 and 80/90, Solve 2 2/14 + 80/90 as a fraction

Add 30/14 and 80/90

1^st number: 2 2/14, 2^nd number: 80/90

30/14 + 80/90 is 191/63.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
30/14 = 30 × 45/14 × 45 = 1350/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630
Add the two like fractions:
1350/630 + 560/630 = 1350 + 560/630 = 1910/630
1910/630 simplified gives 191/63
So, 30/14 + 80/90 = 191/63
In mixed form: 32/63

MathStep (Works offline)

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