When solving this equation: -16 + x = -15 we start with adding 16 to both sides. Why do we use addition?

So you can cancel out the 16. See, the -16 is negative, and if we add +16 to it, then it cancels out and is 0. That way, you have x=1.

Step-by-step explanation:

-16x+x=-15

+16x      +16

   0+x=1

       x=1

1/3 + 1/5 = 8/15.

step-by-step explanation:

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