Question

Evaluate the following expression for x=-2 and y=-4 4(x-y)

Answer 1

x=-2 and y=-4
4(x-y)
4(-2-(-4))=4(2)=8

Answer 2

4(x-y) when x = -2 y=-4
replace x = -2 y=-4 into the expression
4 (-2 - -4)
=4 (-2 + 4) 
= 4 (2)
=8