Answers

Add 42/10 and 54/12

1^st number: 4 2/10, 2^nd number: 4 6/12

42/10 + 54/12 is 87/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 12 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 10 × 6 = 60,
   42/10 = 42 × 6/10 × 6 = 252/60
3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
   54/12 = 54 × 5/12 × 5 = 270/60
4. Add the two like fractions:
   252/60 + 270/60 = 252 + 270/60 = 522/60
5. 522/60 simplified gives 87/10
6. So, 42/10 + 54/12 = 87/10
   In mixed form: 87/10

MathStep (Works offline)

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

Related: ⁸⁴/₁₀+⁵⁴/₁₂ ⁴²/₂₀+⁵⁴/₁₂ ⁴²/₁₀+⁵⁴/₂₄ ⁴²/₃₀+⁵⁴/₁₂ ⁴²/₁₀+⁵⁴/₃₆ ⁴²/₅₀+⁵⁴/₁₂ ⁴²/₁₀+⁵⁴/₆₀ ⁴²/₇₀+⁵⁴/₁₂ ⁴²/₁₀+⁵⁴/₈₄

Add Fractions Calculator