Add 42/30 and 70/27
1st number: 1 12/30, 2nd number: 2 16/27
42/30 + 70/27 is 539/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
42/30 = 42 × 9/30 × 9 = 378/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
70/27 = 70 × 10/27 × 10 = 700/270 - Add the two like fractions:
378/270 + 700/270 = 378 + 700/270 = 1078/270 - 1078/270 simplified gives 539/135
- So, 42/30 + 70/27 = 539/135
In mixed form: 3134/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+70/27 42/60+70/27 42/30+70/54 42/90+70/27 42/30+70/81