Question 6094
Evaluate the parentheses first by substituting the variables by the given values. Start with the inner and continue.
4a-2b[(4a+3b)-3c]-5a
4a-2b{[4*3+3*(-2)]-3(-1)}-5a
4a-2b[(12-6)+3]-5a
4a-2b(9)-5a  Next we do the multiplication
4a-2(-2)(9)-5a
4a+36-5a Now substitute the remaining variables
4*3+36-5*3
12+36-15 = 33
Hope this helps