So lets solve #30. Start by solving the mini equations in the brackets and parenthesis. Work left to right. So start by subtracting four from three. you get -1. Do the next parenthesis, four add nine is 13. Now your equation looks like this: 7-2(-1)+5(13)=?. Next do multiplication and division from left to right. So you'd want to multiply -2 to -1. You get two. Next multiply 5 to 13 to get 65. Now your equation looks like this: 7+2+65= 74. Your answer is 74.