Add 5/30 and 72/42
1st number: 5/30, 2nd number: 1 30/42
5/30 + 72/42 is 79/42.
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,
72/42 = 72 × 5/42 × 5 = 360/210 - Add the two like fractions:
35/210 + 360/210 = 35 + 360/210 = 395/210 - 395/210 simplified gives 79/42
- So, 5/30 + 72/42 = 79/42
In mixed form: 137/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/30+72/42 5/60+72/42 5/30+72/84 15/30+72/42 5/90+72/42 25/30+72/42 35/30+72/42