Add 20/70 and 84/48
1st number: 20/70, 2nd number: 1 36/48
20/70 + 84/48 is 57/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
20/70 = 20 × 24/70 × 24 = 480/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
84/48 = 84 × 35/48 × 35 = 2940/1680 - Add the two like fractions:
480/1680 + 2940/1680 = 480 + 2940/1680 = 3420/1680 - 3420/1680 simplified gives 57/28
- So, 20/70 + 84/48 = 57/28
In mixed form: 21/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70+84/48 20/70+84/96 60/70+84/48