Question

What operation should be performed first in the expression 8 - 2 + 5 x (16 + 66 didved by 2)

Answer 1

Because of he parenthesis, the operation in it must be performed first.
So (16+66/2) should be performed FIRST.

Answer 2

8 - 2 + 5 x ( 16 + 66 ÷ 2)

Do the ÷ in the bracket:

= 8 - 2 + 5 x ( 16 + 33)

Do the operation in the bracket:

= 8 - 2 + 5 x 49

Do multiplication:

= 8 - 2 + 245

Do subtraction:

= 6 + 245

Do addition:

= 251

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Answer: 251