Add 8/15 and 18/42
8/15 + 18/42 is 101/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
8/15 = 8 × 14/15 × 14 = 112/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Add the two like fractions:
112/210 + 90/210 = 112 + 90/210 = 202/210 - 202/210 simplified gives 101/105
- So, 8/15 + 18/42 = 101/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15+18/42 8/15+36/42 8/30+18/42 8/15+18/84 24/15+18/42 8/15+54/42 8/45+18/42 40/15+18/42 8/15+90/42 8/75+18/42 56/15+18/42