6/2(2+1) = x
6/2(3) = x
3(3) = x
9 = x
--> I used PEMDAS; based on the equation, P (parenthesis first), then if there's Multiplication and Division, you have to solve from left to right... so i this equation, we have to solve the division first, which is 6/2... ^^ then multiple... final answer is 9 ^^