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Published byNeil Byrd Modified over 9 years ago

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**Evaluating a Variable Expression To evaluate a variable expression:**

substitute the given numbers for each variable. use order of operations to solve.

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**Example # 1 n + (13 - n) 5 for n = 8**

= 8 + (13 - 8) (Substitute.) = (parentheses) = (Divide l/r.) = (Add l/r.)

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**Example # 2 8y - 3x2 + 2n for x = 5, y = 2, n =3**

= 8 (Substitute.) = 8 (exponents) = (Multiply l/r.) = (Multiply l/r.) = (Multiply l/r.) = (Subtract l/r.) = (Add l/r.)

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**Example # 3: What is the value of -10 – 4x if x = -13?**

-62 -42 42 52 Answer Now

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**Example # 4: What is the value of 5k3 if k = -4?**

-8000 -320 -60 320 Answer Now

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**Example # 5: What is the value of if n = -8, m = 4, and t = 2 ?**

10 -10 -6 6 Answer Now

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