Carl is right because simplifying it gets us:
51 degrees, because using complimentary angles you can calculate that the angle S is half that of angle C
34/3+12/3+2-6+9/6+4+7
Remember PEMDAS:
1. (34/3)+(12/3)+2-6+(9/6)+4+7
11.33+4+2-6+1.66+4+7
The rest can be added together into a calculator (or by hand if you are not supposed to use one)