Answers

Add 18/70 and 42/30

1^st number: 18/70, 2^nd number: 1 12/30

18/70 + 42/30 is 58/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   18/70 = 18 × 3/70 × 3 = 54/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   42/30 = 42 × 7/30 × 7 = 294/210
4. Add the two like fractions:
   54/210 + 294/210 = 54 + 294/210 = 348/210
5. 348/210 simplified gives 58/35
6. So, 18/70 + 42/30 = 58/35
   In mixed form: 123/35

MathStep (Works offline)

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

Related: ³⁶/₇₀+⁴²/₃₀ ¹⁸/₇₀+⁸⁴/₃₀ ¹⁸/₇₀+⁴²/₆₀ ⁵⁴/₇₀+⁴²/₃₀ ¹⁸/₇₀+⁴²/₉₀ ⁹⁰/₇₀+⁴²/₃₀

Add Fractions Calculator