Simplify 2 { [ 3(z-5)+16] - [ 2(3z-3)+1] }= ?

2 { [3(z - 5) + 16] - [2(3z - 3) + 1] }

2 { [ 3z - 15 + 16] - [6z - 6 + 1] }

2 { [ 3z + 1] - [6z - 5] }

2 { 3z + 1 - 6z + 5 }

2 { -3z + 6 }

-6z + 12

hope this helped!

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2 { [ 3(z - 5) + 16 ] - [ 2 (3z - 3) + 1 ] }
2 { [ 3z + 1 ] - [ 6z - 5 ] }
2 { 3z + 1 - 6z + 5 }
2 { 6 - 3z }
12 - 6z

It is good to see brackets being used to present a clear, well defined question.
Can but hope answer is correct !

2{[3(z - 5) + 16] - [2(3z - 3) + 1]}
= 2{[3*z - 3*5 + 16] - [2*3z - 2*3 + 1]}
= 2{[3z - 15 + 16] - [6z - 6 + 1]}
= 2{[3z + 1] - [6z - 5]}
= 2{3z + 1 - 6z + 5}
= 2{3z - 6z + 1 + 5}
= 2{-3z + 6}
= 2*-3z + 2*6
= -6z + 12

2 { [ 3(z-5)+16] - [ 2(3z-3)+1] }=
=2{3z+1-6z+5}
=-6z+12
=12-6z

2{(3z+1)-(6z-5)}
2{-3z+6}
-6z+12

6z + 2 - 12z + 10
6z = 12
z = 2