Answers

Add 10/84 and 25/70

10/84 + 25/70 is 10/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   10/84 = 10 × 5/84 × 5 = 50/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   25/70 = 25 × 6/70 × 6 = 150/420
4. Add the two like fractions:
   50/420 + 150/420 = 50 + 150/420 = 200/420
5. 200/420 simplified gives 10/21
6. So, 10/84 + 25/70 = 10/21

MathStep (Works offline)

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

Related: ²⁰/₈₄+²⁵/₇₀ ¹⁰/₈₄+⁵⁰/₇₀ ³⁰/₈₄+²⁵/₇₀ ¹⁰/₈₄+⁷⁵/₇₀ ⁵⁰/₈₄+²⁵/₇₀ ⁷⁰/₈₄+²⁵/₇₀

Add Fractions Calculator