Solve Equations with Variables on both sides

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Subtract 2x from both sides.

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x = 3.

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What equation represents Sally's purchase of three candy bars for $18.00?

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3c = 18.

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Subtract b from both sides and then subtract 4.

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b = 3.

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What does it mean to have variables on both sides of an equation?

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It means that the variable appears on both sides of the equal sign, requiring manipulation to isolate the variable.

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What is the purpose of combining like terms in an equation?

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To simplify the equation and make it easier to solve.

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What is the definition of a variable in algebra?

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A symbol, often a letter, that represents an unknown value.

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Subtract 5 from both sides.

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x = 7.