ACT 2010 December(69A) Math Question 7 Explanation - ACT Helper

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2010 December(69A) Math Question 7
Algebraic & Function Expressions
- Solve Algebraic Expressions
Choice C
$- 2 (x - 7) = 20$ $\Rightarrow x - 7 = \frac{20}{- 2} = - 10$ $\Rightarrow x = - 3$
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