Add 18/84 and 4/10
18/84 + 4/10 is 43/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
18/84 = 18 × 5/84 × 5 = 90/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
4/10 = 4 × 42/10 × 42 = 168/420 - Add the two like fractions:
90/420 + 168/420 = 90 + 168/420 = 258/420 - 258/420 simplified gives 43/70
- So, 18/84 + 4/10 = 43/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/84+4/10 18/84+8/10 18/84+4/20 54/84+4/10 18/84+12/10 18/84+4/30 90/84+4/10 18/84+20/10 18/84+4/50 18/84+28/10 18/84+4/70