1. Parentheses first:
6 \div 2(1+2) = 6 \div 2(3)
2. Multiplication and Division from left to right:
6 \div 2 \times 3
Division and multiplication are performed from left to right.
First, perform the division: 6 \div 2 = 3
Then, multiply the result by 3: 3 \times 3 = 9
So, the solution to the equation 6 \div 2(1+2) is 9.