Add 7/42 and 8/30
7/42 + 8/30 is 13/30.
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,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Add the two like fractions:
35/210 + 56/210 = 35 + 56/210 = 91/210 - 91/210 simplified gives 13/30
- So, 7/42 + 8/30 = 13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42+8/30 7/42+16/30 7/84+8/30 7/42+8/60 21/42+8/30 7/42+24/30 7/42+8/90 35/42+8/30 7/42+40/30 49/42+8/30 7/42+56/30