Add 42/70 and 36/28
1st number: 42/70, 2nd number: 1 8/28
42/70 + 36/28 is 66/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
42/70 = 42 × 2/70 × 2 = 84/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
36/28 = 36 × 5/28 × 5 = 180/140 - Add the two like fractions:
84/140 + 180/140 = 84 + 180/140 = 264/140 - 264/140 simplified gives 66/35
- So, 42/70 + 36/28 = 66/35
In mixed form: 131/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70+36/28 42/70+72/28 42/70+36/56 42/70+36/84