Answers

Add 7/84 and 10/90

7/84 + 10/90 is 7/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   7/84 = 7 × 15/84 × 15 = 105/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   10/90 = 10 × 14/90 × 14 = 140/1260
4. Add the two like fractions:
   105/1260 + 140/1260 = 105 + 140/1260 = 245/1260
5. 245/1260 simplified gives 7/36
6. So, 7/84 + 10/90 = 7/36

MathStep (Works offline)

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

Related: ¹⁴/₈₄+¹⁰/₉₀ ⁷/₈₄+²⁰/₉₀ ²¹/₈₄+¹⁰/₉₀ ⁷/₈₄+³⁰/₉₀ ³⁵/₈₄+¹⁰/₉₀ ⁷/₈₄+⁵⁰/₉₀ ⁴⁹/₈₄+¹⁰/₉₀ ⁷/₈₄+⁷⁰/₉₀

Add Fractions Calculator