What is negative 15 minus positive 20?

Answer 1

negative 35. Think of it like a number line.

I I I I I I I I I I I

-6 -5 -4 -3 -2 -1 0 1 2 3 4

Ex: what is -2 - 4?

1. reading left to right, you begin at -2 on the number line

2. you are then asked to subtract or move to the left four spaces

3. -2 -> -3, -4, -5, -6