Add 30/35 and 8/84
30/35 + 8/84 is 20/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
30/35 = 30 × 12/35 × 12 = 360/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Add the two like fractions:
360/420 + 40/420 = 360 + 40/420 = 400/420 - 400/420 simplified gives 20/21
- So, 30/35 + 8/84 = 20/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/35+8/84 30/35+16/84 30/70+8/84 90/35+8/84 30/35+24/84 30/35+40/84 30/35+56/84