Verified answer

8 - { x - 5 - x }

8 - { - 5 }

8 + 5

13

8 - x + 5 + x

= 13

13

Answer is definitely 13. The x's cancel out. everything in the parentheses are -. so inside the brackets you get x-5-x=-5. Then you have 8-(-5)=8+5=13

=8 - {x - 5 - x}

=8 - { - 5 }

=8 + 5

=13

a)13

-2x+3 !!!!

the answer is 13

good luck