6-2x(12/2)= you do what is in the parenthesis 1st: 12/2 which is 6
so now you have 6-2x(6) then you do -2x(6) which is -12
6- -12x change that to 6+12x and that is your answer
6-2x(12/2)= 6+12x
remember this phrase is will help you:
PEMDAS do them in this order
P: parenthesis
E: exponents
M: multiply
D: divide
A: add
S: subtract