Add 42/5 and 45/42
1st number: 8 2/5, 2nd number: 1 3/42
42/5 + 45/42 is 663/70.
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,
42/5 = 42 × 42/5 × 42 = 1764/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
45/42 = 45 × 5/42 × 5 = 225/210 - Add the two like fractions:
1764/210 + 225/210 = 1764 + 225/210 = 1989/210 - 1989/210 simplified gives 663/70
- So, 42/5 + 45/42 = 663/70
In mixed form: 933/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+45/42 42/5+90/42 42/10+45/42 42/5+45/84 42/15+45/42 42/25+45/42 42/35+45/42