What is the solution to the equation: 3x + 5 = 3x − 5

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

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.

What is the value of x in the this question ?