Add 42/70 and 18/35
42/70 + 18/35 is 39/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 35 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Likewise, for the 2nd fraction, since 35 × 2 = 70,
18/35 = 18 × 2/35 × 2 = 36/70 - Add the two like fractions:
42/70 + 36/70 = 42 + 36/70 = 78/70 - 78/70 simplified gives 39/35
- So, 42/70 + 18/35 = 39/35
In mixed form: 14/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+18/35 42/70+36/35 42/70+18/70 42/70+54/35 42/70+90/35