Add 45/3 and 42/70
1st number: 15 0/3, 2nd number: 42/70
45/3 + 42/70 is 78/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
45/3 = 45 × 70/3 × 70 = 3150/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Add the two like fractions:
3150/210 + 126/210 = 3150 + 126/210 = 3276/210 - 3276/210 simplified gives 78/5
- So, 45/3 + 42/70 = 78/5
In mixed form: 153/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3+42/70 45/3+84/70 45/6+42/70 45/9+42/70 45/15+42/70 45/21+42/70