Answers

Add 54/90 and 42/25

1^st number: 54/90, 2^nd number: 1 17/25

54/90 + 42/25 is 57/25.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 25 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 90 × 5 = 450,
   54/90 = 54 × 5/90 × 5 = 270/450
3. Likewise, for the 2nd fraction, since 25 × 18 = 450,
   42/25 = 42 × 18/25 × 18 = 756/450
4. Add the two like fractions:
   270/450 + 756/450 = 270 + 756/450 = 1026/450
5. 1026/450 simplified gives 57/25
6. So, 54/90 + 42/25 = 57/25
   In mixed form: 27/25

MathStep (Works offline)

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

Related: ⁵⁴/₉₀+⁸⁴/₂₅ ⁵⁴/₉₀+⁴²/₅₀ ⁵⁴/₉₀+⁴²/₇₅

Add Fractions Calculator