Add 5/30 and 12/42
5/30 + 12/42 is 19/42.
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,
5/30 = 5 × 7/30 × 7 = 35/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Add the two like fractions:
35/210 + 60/210 = 35 + 60/210 = 95/210 - 95/210 simplified gives 19/42
- So, 5/30 + 12/42 = 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+12/42 5/30+24/42 5/60+12/42 5/30+12/84 15/30+12/42 5/30+36/42 5/90+12/42 25/30+12/42 5/30+60/42 35/30+12/42 5/30+84/42