In a class containing 32 students, a student can either do government or history or both. if 16 students do government, 18 do history and 3 do none of the subjects, find how many do both

Don't know how to find x given these segment lengths

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

The distributive property allows you to say that 3(x − 1) = 3x −