12/5 ACE 7th Math Equations

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30

Front

The objective when solving an equation is to....

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isolate the variable.

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2

Front

Solve: -7 - 3x = -34

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x = 9

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Solve: n = ? (where n = -26)

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n = -26

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What is an equation?

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A mathematical statement that asserts the equality of two expressions.

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What does it mean to isolate a variable?

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To manipulate an equation so that the variable is on one side and all other terms are on the other side.

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Subtract 5 from both sides.

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x = 7

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What does it mean to check a solution?

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To substitute the solution back into the original equation to verify it satisfies the equation.