Add 8/10 and 30/84
8/10 + 30/84 is 81/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
8/10 = 8 × 42/10 × 42 = 336/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420 - Add the two like fractions:
336/420 + 150/420 = 336 + 150/420 = 486/420 - 486/420 simplified gives 81/70
- So, 8/10 + 30/84 = 81/70
In mixed form: 111/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10+30/84 8/10+60/84 8/20+30/84 24/10+30/84 8/10+90/84 8/30+30/84 40/10+30/84 8/50+30/84 56/10+30/84 8/70+30/84