What two numbers multiply to -315 and add up to -26?

First we will divide -315 by 5 because it seems that's the only number that will fit. 
-315 / 5 = -63

Now we know that -63 x 5 = -315.

Then we subtract -315 by -26
-315 - -26 = -289.

Since we're going to try to add it up to -26, we're going to turn the -289 into a whole number.
-289 = 289

So we now take all the steps we took to find everything out and combine it into an equation.
-63 x 5 + 289 = -26

So your answer is -63 x 5 + 289.

Hope this helps!~