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To solve an equation with one or two variables, you must isolate the variable that you are solving for. Combine like terms following the order of operations. Using operation principles, perform the same operations to both sides of the equation.

It's important to know what are your like terms. Given the equation 5x-2=7x+8, 5x and 7x are like terms, since the contain the same variable. 5x and 2 are not like terms, and cannot be combined.

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