EXPLANATION
Given the algebraic expression:
4(x-2y+2z) - (2x + 3y -2z)
where x = -1 , y = 3 and z = 5
Replacing terms:
=4(-1-2*3+2*5) - (2*-1 + 3*3 -2*5)
Multiplying numbers:
=4(-1-6+10) - (-2 + 9 -10)
Adding numbers:
= 4(3) - (-3)
Removing the parentheses:
= 12 + 3
Adding numbers:
= 15
The answer is 15