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Addition and Subtraction of Algebraic Expression

Evaluate each...

Question

Evaluate each of the following algebraic expressions for $x = 1, y = - 1, z = 2, a = - 2, b = z, c = - 2$
$a x + b y + c z = ?$

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Solution

$a x + b y + c z$
$= - 2 \times 1 + 2 \times - 1 + (- 2) \times 2$
$= - 2 - 2 - 4 - = - 8$

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