As written your question is almost total nonsense - the only answerI can give based on what you have written is: They are a set of equations, probably describing the lengths

…of twoline segments. However, by doing a web search I have been able to find some morequestions similar to what you have written and so been able to findwhat might be the CONTEXT of what you are asking. At a guess, you have an exercise, in Algebra, where you have beentold (but FAILED to tell us so we have no idea whatexercise/homework you are trying to get done for you): ``PQ is a line segment with T the mid point of PQ. Calculate thelength PT when given the following lengths PT and TQ'' With that context in mind: if T is the midpoint of PQ, then PT = TQ You have told us: .
PT = 33x + 77 .
TQ = 77x - 9 Which means: PT = TQ â 33x + 77 = 77x - 9 You now have an algebraic equation involving x which YOU can nowsolve (I had to do some hard work guessing what you wantedanswered, so you can repay me by doing the work to get to the finalsolution - hint: collect all the x onto one side and all thenumbers on the other, remembering that what you do to one side ofthe equals you MUST do to the other side). ------------------------------------------------------------------------------------- Learning how to realise what all the important facts of a problem,especially the CONTEXT (ie background information) of the questionare so that you can tell them to someone else, is a very importantlife skill which you seem to be lacking; people can not always seewhat you can see and so do not always know what you know - you needto THINK about what another people are likely to not know. ( Full Answer )