Practice Evaluating Expressions in One Variable
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Now, let's practice substituting values for variables. Here are seven practice problems that will allow you to show what you have learned.
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Evaluate $$c-2$$ when $$c = 7$$.
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Evaluate $$9 - \frac{8}{S}$$ when $$S = 4$$.
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Evaluate $$\frac{n}{6} + 2$$ when $$n = 12$$.
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Evaluate $$6h$$ when $$h = 8$$.
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Evaluate $$6+x$$ when $$x = 3$$.
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Evaluate $$\frac{9}{m} + 4$$ when $$m = 3$$.
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Evaluate $$\frac{p}{2} -5$$ when $$p = 14$$.
Source: Khan Academy, https://www.khanacademy.org/math/in-seventh-grade-math/algebraic-expressions/finding-value-expression/e/evaluating_expressions_1
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