Answers

Add 20/70 and 90/25

1^st number: 20/70, 2^nd number: 3 15/25

20/70 + 90/25 is 136/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 25 is 350
   
   Next, find the equivalent fraction of both fractional numbers with denominator 350
2. For the 1st fraction, since 70 × 5 = 350,
   20/70 = 20 × 5/70 × 5 = 100/350
3. Likewise, for the 2nd fraction, since 25 × 14 = 350,
   90/25 = 90 × 14/25 × 14 = 1260/350
4. Add the two like fractions:
   100/350 + 1260/350 = 100 + 1260/350 = 1360/350
5. 1360/350 simplified gives 136/35
6. So, 20/70 + 90/25 = 136/35
   In mixed form: 331/35

MathStep (Works offline)

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

Related: ⁴⁰/₇₀+⁹⁰/₂₅ ²⁰/₇₀+⁹⁰/₅₀ ⁶⁰/₇₀+⁹⁰/₂₅ ²⁰/₇₀+⁹⁰/₇₅

Add Fractions Calculator