Add 5/7 and 70/54, Solve 5/7 + 1 16/54 as a fraction

Add 5/7 and 70/54

1^st number: 5/7, 2^nd number: 1 16/54

5/7 + 70/54 is 380/189.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 7 × 54 = 378,
5/7 = 5 × 54/7 × 54 = 270/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
70/54 = 70 × 7/54 × 7 = 490/378
Add the two like fractions:
270/378 + 490/378 = 270 + 490/378 = 760/378
760/378 simplified gives 380/189
So, 5/7 + 70/54 = 380/189
In mixed form: 22/189

MathStep (Works offline)

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