Add 70/98 and 42/54, Solve 70/98 + 42/54 as a fraction

Add 70/98 and 42/54

70/98 + 42/54 is 94/63.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 54 is 2646

Next, find the equivalent fraction of both fractional numbers with denominator 2646
For the 1st fraction, since 98 × 27 = 2646,
70/98 = 70 × 27/98 × 27 = 1890/2646
Likewise, for the 2nd fraction, since 54 × 49 = 2646,
42/54 = 42 × 49/54 × 49 = 2058/2646
Add the two like fractions:
1890/2646 + 2058/2646 = 1890 + 2058/2646 = 3948/2646
3948/2646 simplified gives 94/63
So, 70/98 + 42/54 = 94/63
In mixed form: 131/63

MathStep (Works offline)

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