I don't want to do this for you, I do, but I want you to learn, so, use PEMDAS(Parenthesis, Exponents,MUltiply,Divide,Add,Subtract.) Fine. problem 6=d 8=a Well 7 is little tricky. The answer is 10, but there is no a,b,c,or d that says it's the value. Example (F=10) there is nothing like that. Did you cut it off?
