Answers

Add 90/60 and 15/25

1^st number: 1 30/60, 2^nd number: 15/25

90/60 + 15/25 is 21/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 25 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 60 × 5 = 300,
   90/60 = 90 × 5/60 × 5 = 450/300
3. Likewise, for the 2nd fraction, since 25 × 12 = 300,
   15/25 = 15 × 12/25 × 12 = 180/300
4. Add the two like fractions:
   450/300 + 180/300 = 450 + 180/300 = 630/300
5. 630/300 simplified gives 21/10
6. So, 90/60 + 15/25 = 21/10
   In mixed form: 21/10

MathStep (Works offline)

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

Related: ⁹⁰/₆₀+³⁰/₂₅ ⁹⁰/₆₀+¹⁵/₅₀ ⁹⁰/₆₀+⁴⁵/₂₅ ⁹⁰/₆₀+¹⁵/₇₅ ⁹⁰/₆₀+⁷⁵/₂₅

Add Fractions Calculator