Question

-1/3+(-3/5)=

Answer 1

First simplify the parenthesis;

-1/3 - 3/5 =

(-1/3) +(-3/5) [it changed sign cause, (-)(-) = +]

So now you must find the LCD to be able to add them;

(-5/15) + (-9/15) = -14/15

So your final answer would be:  -14/15  or  option C.

Answer 2

$\frac{-1}{3} + \frac{-3}{5}$
You need to use the equation for adding fractions, which is $\frac{a}{b} + \frac{c}{d} =(ad+bc)/bd$

In this case,  a=-1, b=3, c=-3, d=5. 

$\frac{(-1*5)+(3*-3)}{(3*5)}$

simplify

answer: $\frac{-14}{15}$