Add 40/14 and 84/9, Solve 2 12/14 + 9 3/9 as a fraction

Add 40/14 and 84/9

1^st number: 2 12/14, 2^nd number: 9 3/9

40/14 + 84/9 is 256/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 9 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 14 × 9 = 126,
40/14 = 40 × 9/14 × 9 = 360/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
84/9 = 84 × 14/9 × 14 = 1176/126
Add the two like fractions:
360/126 + 1176/126 = 360 + 1176/126 = 1536/126
1536/126 simplified gives 256/21
So, 40/14 + 84/9 = 256/21
In mixed form: 124/21

MathStep (Works offline)

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