Answers

Add 54/15 and 40/70

1^st number: 3 9/15, 2^nd number: 40/70

54/15 + 40/70 is 146/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 15 × 14 = 210,
   54/15 = 54 × 14/15 × 14 = 756/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   40/70 = 40 × 3/70 × 3 = 120/210
4. Add the two like fractions:
   756/210 + 120/210 = 756 + 120/210 = 876/210
5. 876/210 simplified gives 146/35
6. So, 54/15 + 40/70 = 146/35
   In mixed form: 46/35

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁵⁴/₁₅+⁸⁰/₇₀ ⁵⁴/₃₀+⁴⁰/₇₀ ⁵⁴/₄₅+⁴⁰/₇₀ ⁵⁴/₇₅+⁴⁰/₇₀

Add Fractions Calculator