Add 84/70 and 12/24, Solve 1 14/70 + 12/24 as a fraction

Add 84/70 and 12/24

1^st number: 1 14/70, 2^nd number: 12/24

84/70 + 12/24 is 17/10.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 70 × 12 = 840,
84/70 = 84 × 12/70 × 12 = 1008/840
Likewise, for the 2nd fraction, since 24 × 35 = 840,
12/24 = 12 × 35/24 × 35 = 420/840
Add the two like fractions:
1008/840 + 420/840 = 1008 + 420/840 = 1428/840
1428/840 simplified gives 17/10
So, 84/70 + 12/24 = 17/10
In mixed form: 17/10

MathStep (Works offline)

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