Add 1/42 and 12/30
1/42 + 12/30 is 89/210.
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,
1/42 = 1 × 5/42 × 5 = 5/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Add the two like fractions:
5/210 + 84/210 = 5 + 84/210 = 89/210 - So, 1/42 + 12/30 = 89/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42+12/30 1/42+24/30 1/84+12/30 1/42+12/60 3/42+12/30 1/42+36/30 1/42+12/90 5/42+12/30 1/42+60/30 7/42+12/30 1/42+84/30