Add 1/30 and 28/42
1/30 + 28/42 is 7/10.
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,
1/30 = 1 × 7/30 × 7 = 7/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210 - Add the two like fractions:
7/210 + 140/210 = 7 + 140/210 = 147/210 - 147/210 simplified gives 7/10
- So, 1/30 + 28/42 = 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30+28/42 1/30+56/42 1/60+28/42 1/30+28/84 3/30+28/42 1/30+84/42 1/90+28/42 5/30+28/42 7/30+28/42