Please Simplify?

[3(8-3)-7]-[8-(7-9)]=
8-10=
-2

[3(8-3)-7]-[8-(7-9)]=
[3(5)-7]-[8-(-2)]=
[15-7]-[8+2]=
[8]-[10]=
8-10 = -2
-2

=(3x5-7)-[ 8-(-2)]
=(15-7)-(8+2)
=8-10
=-2

[3(8-3)-7]-[8-(7-9)]
=[3(5)-7]-[8-(-2)]
=[15-7]-[8+2]
=[8]-[10]
=-2

[3(8 - 3) - 7] - [8 - (7 - 9)]
= [3(5) - 7] - [8 - (-2)]
= (15 - 7) - (8 + 2)
= 8 - 10
= -2

[3(8 - 3) - 7] - [8 - (7 - 9)]
= [3(5) - 7] - [8 - (-2)]
= [15 - 7] - [8 + 2]
= 8 - 10
= -2

=(3*5-7)-[8- (-2)] =15-7-10 = -2

=(3*5-7)-[8- (-2)]
=15-7-10
= -2

[ 3 (8 - 3) - 7 ] - [ 8 - (7 - 9) ]
[ 3 (5) - 7 ] - [ 8 - (- 2) ]
[ 15 - 7 ] - [ 8 + 2 ]
[ 8 ] - [ 10 ]
- 2

PS
Unlike many , by using brackets , you produced a very clear question-----well done !

Use Pemdas (parenthesis, exponents, multipy/divide, addition, subtract)

Start with the most inner parenthesis which are

(8-3) and (7-9) = (5) and (-2)

then it simplifies to..

[3(5)-7)]-[8-(-2)] remember when you subtract from a negative it becomes postive or plus.. so...

[3(5)-7)]-[8+2]

Then next is exponents, but there are none so multiply. The only multiplication is 3x5 = 15 ... so...

[15-7]-[10]..... then do subtraction...

15-7 = 8... so...

8-10= -2 that is your answer! (use your calculator to check your answer)