Add 15/30 and 54/35
1st number: 15/30, 2nd number: 1 19/35
15/30 + 54/35 is 143/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
54/35 = 54 × 6/35 × 6 = 324/210 - Add the two like fractions:
105/210 + 324/210 = 105 + 324/210 = 429/210 - 429/210 simplified gives 143/70
- So, 15/30 + 54/35 = 143/70
In mixed form: 23/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/60+54/35 15/30+54/70 45/30+54/35 15/90+54/35 75/30+54/35