Answers

Add 42/30 and 70/63

1^st number: 1 12/30, 2^nd number: 1 7/63

42/30 + 70/63 is 113/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 30 × 21 = 630,
   42/30 = 42 × 21/30 × 21 = 882/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   70/63 = 70 × 10/63 × 10 = 700/630
4. Add the two like fractions:
   882/630 + 700/630 = 882 + 700/630 = 1582/630
5. 1582/630 simplified gives 113/45
6. So, 42/30 + 70/63 = 113/45
   In mixed form: 223/45

MathStep (Works offline)

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

Related: ⁸⁴/₃₀+⁷⁰/₆₃ ⁴²/₆₀+⁷⁰/₆₃ ⁴²/₉₀+⁷⁰/₆₃

Add Fractions Calculator