Add 18/42 and 4/30
18/42 + 4/30 is 59/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
4/30 = 4 × 7/30 × 7 = 28/210 - Add the two like fractions:
90/210 + 28/210 = 90 + 28/210 = 118/210 - 118/210 simplified gives 59/105
- So, 18/42 + 4/30 = 59/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+4/30 18/42+8/30 18/84+4/30 18/42+4/60 54/42+4/30 18/42+12/30 18/42+4/90 90/42+4/30 18/42+20/30 18/42+28/30