Don't overthink it darling, just plug in the numbers to the equation. When you do that, you get 3+(5 + 4)(8 - 6). You add the 5 and 4 and subtract the 8 and 6. Your equation now is 3+9*2. Being there is no sign between the two )( it means your multiplying. So you do 9*2 and you get 18+3 and you get your answer of 21.
