Answers

Add 45/30 and 48/40

1^st number: 1 15/30, 2^nd number: 1 8/40

45/30 + 48/40 is 27/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   45/30 = 45 × 4/30 × 4 = 180/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   48/40 = 48 × 3/40 × 3 = 144/120
4. Add the two like fractions:
   180/120 + 144/120 = 180 + 144/120 = 324/120
5. 324/120 simplified gives 27/10
6. So, 45/30 + 48/40 = 27/10
   In mixed form: 27/10

MathStep (Works offline)

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

Related: ⁹⁰/₃₀+⁴⁸/₄₀ ⁴⁵/₃₀+⁹⁶/₄₀ ⁴⁵/₆₀+⁴⁸/₄₀ ⁴⁵/₃₀+⁴⁸/₈₀ ⁴⁵/₉₀+⁴⁸/₄₀

Add Fractions Calculator