Add 18/30 and 27/70
18/30 + 27/70 is 69/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
18/30 = 18 × 7/30 × 7 = 126/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
27/70 = 27 × 3/70 × 3 = 81/210 - Add the two like fractions:
126/210 + 81/210 = 126 + 81/210 = 207/210 - 207/210 simplified gives 69/70
- So, 18/30 + 27/70 = 69/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30+27/70 18/30+54/70 18/60+27/70 54/30+27/70 18/30+81/70 18/90+27/70 90/30+27/70