Question

I need help please help me out

Answer 1

Explanation:

First one..

move the green dot one step to the left

Interactive table

U is under the operation a-b

where a = -1 and b = -2

U = -1 - (-2)

U = -1 + 2

U = 1

V is under the operation a-b

where a = -4 and b = 1

V = -4 -1

V = -5