Question

12/13+-1/13 equals what ?

Answer 1

Given:

`(12)/(13)+(-(1)/(13))`

Adding a negativen number is the same as subtracting that number, so:

`(12)/(13)-(1)/(13)`

Since both denominators (bottom number ) are equal we can subtract the numerators ( top numbers)

`((12-1))/(13)=(11)/(13)`

Answer:

`(11)/(13)`