Add 18/35 and 54/70
18/35 + 54/70 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 35 × 2 = 70,
18/35 = 18 × 2/35 × 2 = 36/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
54/70 = 54 × 1/70 × 1 = 54/70 - Add the two like fractions:
36/70 + 54/70 = 36 + 54/70 = 90/70 - 90/70 simplified gives 9/7
- So, 18/35 + 54/70 = 9/7
In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/35+54/70 18/70+54/70 54/35+54/70 90/35+54/70