Add 20/5 and 54/42
1st number: 4 0/5, 2nd number: 1 12/42
20/5 + 54/42 is 37/7.
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,
20/5 = 20 × 42/5 × 42 = 840/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Add the two like fractions:
840/210 + 270/210 = 840 + 270/210 = 1110/210 - 1110/210 simplified gives 37/7
- So, 20/5 + 54/42 = 37/7
In mixed form: 52/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+54/42 20/10+54/42 20/5+54/84 60/5+54/42 20/15+54/42 20/25+54/42 20/35+54/42