Add 12/30 and 5/42
12/30 + 5/42 is 109/210.
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,
12/30 = 12 × 7/30 × 7 = 84/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
5/42 = 5 × 5/42 × 5 = 25/210 - Add the two like fractions:
84/210 + 25/210 = 84 + 25/210 = 109/210 - So, 12/30 + 5/42 = 109/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+5/42 12/30+10/42 12/60+5/42 12/30+5/84 36/30+5/42 12/30+15/42 12/90+5/42 60/30+5/42 12/30+25/42 84/30+5/42 12/30+35/42