The document discusses solving linear equations in one variable through various algebraic methods like combining like terms, adding/subtracting the same quantity from both sides, and multiplying/dividing both sides by the same non-zero quantity. It provides examples of creating equivalent equations and solving simple one-step and two-step equations. The last example asks how much money Jeanne needs to buy a $68 game if she has $17, which is solved by setting up and solving the equation 17 + x = 68.