Question

4(x - 2y + 2z) - (2x + 3y - 2z) for x = -1, y = 3, and z = 5

Answer 1

Distribute the 4 in the first expression. Then subtract the second expression. Simplify. Then substitute the given numbers.

Answer 2

u can substitute it directly.....

Answer 3

You can do that too but I think the purpose here is to learn how to simplify an algebraic expression first and then to learn substitution.

Answer 4

4(-1-2(3)+2(5))-(2(1)+3(3)-2(5))