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huyhuyy12
well just show each par of the expression like you would show them 13+5 and then x 2 then -6 and +8. Just show each part of the expression
Follow the order of operations acronym  PEMDAS

6 - (5 + 13)x2 + 8
Firt work out the parentheses;-
6 - 18  x 2   + 8
Now the multiplication:-
6 - 36 + 8 
Now calculate from left to right:-

-30 + 8

= -22     Answer

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