Add 20/84 and 70/27
1st number: 20/84, 2nd number: 2 16/27
20/84 + 70/27 is 535/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
20/84 = 20 × 9/84 × 9 = 180/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
70/27 = 70 × 28/27 × 28 = 1960/756 - Add the two like fractions:
180/756 + 1960/756 = 180 + 1960/756 = 2140/756 - 2140/756 simplified gives 535/189
- So, 20/84 + 70/27 = 535/189
In mixed form: 2157/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/84+70/27 20/84+70/54 60/84+70/27 20/84+70/81