Negative symbol as opposite
What's - -7? Well, -7 is 7 units to the left of 0 on a number line, so - -7 is 7 units to the right of 0. The negative symbol gives us a value in the opposite direction.
What's - -7? Well, -7 is 7 units to the left of 0 on a number line, so - -7 is 7 units to the right of 0. The negative symbol gives us a value in the opposite direction.
