Question

What is the difference between -21 and -8?

Answer 1

-13

Explanation:

(-21) - (-8) = -13

-21 - -8 = -13

Because of the two subtract signs next to each other before the number 8, they change to an addition sign.

From -21, move right 8 places along the number line because it is add 8.

-21 -20 -19 -18 -17 -16 -15 -14 -13

And you get to -13

Therefore, -21 + 8 = -13