WEBVTT

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Here is the problem: 8x plus 8 equals negative 12.

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A linear equation in x: isolate x using inverse operations.

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Start with the equation.

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Subtract 8 from both sides.

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Divide both sides by 8.

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So the answer is x equals negative 5 over 2 approximately negative 2.5.

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Doing the same operation to both sides keeps the equation balanced. Undoing addition, then multiplication, leaves x alone.

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x equals negative 2.5: left side equals negative 12, right side equals negative 12, which checks out.