Add 8/30 and 15/42
8/30 + 15/42 is 131/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
15/42 = 15 × 5/42 × 5 = 75/210 - Add the two like fractions:
56/210 + 75/210 = 56 + 75/210 = 131/210 - So, 8/30 + 15/42 = 131/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30+15/42 8/30+30/42 8/60+15/42 8/30+15/84 24/30+15/42 8/30+45/42 8/90+15/42 40/30+15/42 8/30+75/42 56/30+15/42