Add 28/5 and 18/42
1st number: 5 3/5, 2nd number: 18/42
28/5 + 18/42 is 211/35.
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,
28/5 = 28 × 42/5 × 42 = 1176/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Add the two like fractions:
1176/210 + 90/210 = 1176 + 90/210 = 1266/210 - 1266/210 simplified gives 211/35
- So, 28/5 + 18/42 = 211/35
In mixed form: 61/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+18/42 28/5+36/42 28/10+18/42 28/5+18/84 84/5+18/42 28/5+54/42 28/15+18/42 28/5+90/42 28/25+18/42 28/35+18/42