Write an equation for the line parallel to the given line that contains C.
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Can someone show me the steps to solve the problem?

What does x = in this equation x+3+2x=x+5

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field