Add 4/5 and 12/42
4/5 + 12/42 is 38/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
4/5 = 4 × 42/5 × 42 = 168/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Add the two like fractions:
168/210 + 60/210 = 168 + 60/210 = 228/210 - 228/210 simplified gives 38/35
- So, 4/5 + 12/42 = 38/35
In mixed form: 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5+12/42 4/5+24/42 4/10+12/42 4/5+12/84 12/5+12/42 4/5+36/42 4/15+12/42 20/5+12/42 4/5+60/42 4/25+12/42 28/5+12/42 4/5+84/42 4/35+12/42