Add 56/45 and 42/70
1st number: 1 11/45, 2nd number: 42/70
56/45 + 42/70 is 83/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
56/45 = 56 × 14/45 × 14 = 784/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Add the two like fractions:
784/630 + 378/630 = 784 + 378/630 = 1162/630 - 1162/630 simplified gives 83/45
- So, 56/45 + 42/70 = 83/45
In mixed form: 138/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45+84/70 56/90+42/70