Add 42/35 and 12/81
1st number: 1 7/35, 2nd number: 12/81
42/35 + 12/81 is 182/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
42/35 = 42 × 81/35 × 81 = 3402/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
12/81 = 12 × 35/81 × 35 = 420/2835 - Add the two like fractions:
3402/2835 + 420/2835 = 3402 + 420/2835 = 3822/2835 - 3822/2835 simplified gives 182/135
- So, 42/35 + 12/81 = 182/135
In mixed form: 147/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/35+12/81 42/35+24/81 42/70+12/81 42/35+36/81 42/35+60/81 42/35+84/81