Add 28/54 and 75/10, Solve 28/54 + 7 5/10 as a fraction

Add 28/54 and 75/10

1^st number: 28/54, 2^nd number: 7 5/10

28/54 + 75/10 is 433/54.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 10 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270
Likewise, for the 2nd fraction, since 10 × 27 = 270,
75/10 = 75 × 27/10 × 27 = 2025/270
Add the two like fractions:
140/270 + 2025/270 = 140 + 2025/270 = 2165/270
2165/270 simplified gives 433/54
So, 28/54 + 75/10 = 433/54
In mixed form: 81/54

MathStep (Works offline)

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