Add 42/10 and 70/81
1st number: 4 2/10, 2nd number: 70/81
42/10 + 70/81 is 2051/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 10 × 81 = 810,
42/10 = 42 × 81/10 × 81 = 3402/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
70/81 = 70 × 10/81 × 10 = 700/810 - Add the two like fractions:
3402/810 + 700/810 = 3402 + 700/810 = 4102/810 - 4102/810 simplified gives 2051/405
- So, 42/10 + 70/81 = 2051/405
In mixed form: 526/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+70/81 42/20+70/81 42/30+70/81 42/50+70/81 42/70+70/81