Add 70/75 and 90/54, Solve 70/75 + 1 36/54 as a fraction

Add 70/75 and 90/54

1^st number: 70/75, 2^nd number: 1 36/54

70/75 + 90/54 is 13/5.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 54 is 1350

Next, find the equivalent fraction of both fractional numbers with denominator 1350
For the 1st fraction, since 75 × 18 = 1350,
70/75 = 70 × 18/75 × 18 = 1260/1350
Likewise, for the 2nd fraction, since 54 × 25 = 1350,
90/54 = 90 × 25/54 × 25 = 2250/1350
Add the two like fractions:
1260/1350 + 2250/1350 = 1260 + 2250/1350 = 3510/1350
3510/1350 simplified gives 13/5
So, 70/75 + 90/54 = 13/5
In mixed form: 23/5

MathStep (Works offline)

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