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Will give brainliest summations with algebraic expressions image shown

Tell me how you got the it use the figures to answer questions 1and 2. in each diagram, line k is parallel to line l, and line t intersects lines. 1. based on the diagrams, what is the value of x? 2. how would you verify your answer for x?

For the equations below which statement is true ? -2x=14 6x=-42