Answers

Add 54/45 and 42/70

1^st number: 1 9/45, 2^nd number: 42/70

54/45 + 42/70 is 9/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   54/45 = 54 × 14/45 × 14 = 756/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   42/70 = 42 × 9/70 × 9 = 378/630
4. Add the two like fractions:
   756/630 + 378/630 = 756 + 378/630 = 1134/630
5. 1134/630 simplified gives 9/5
6. So, 54/45 + 42/70 = 9/5
   In mixed form: 14/5

MathStep (Works offline)

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

Related: ⁵⁴/₄₅+⁸⁴/₇₀ ⁵⁴/₉₀+⁴²/₇₀

Add Fractions Calculator