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8:58 PM Thu Feb 20 Emilio Mejia Felici... R. 5 Evaluate multi-variable expressions Video 03:18 v Evaluate the expression for \( w=-1 \) and \( x=-5 \). \[ w x-x= \] \( \square \) Submit Not ready yet?
Ask by Mathis Hodges. in Puerto Rico
Feb 21,2025
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When \( w=-1 \) and \( x=-5 \), the expression \( wx-x \) equals 10.
Solución
Substitute \( w=-1 \) and \( x=-5 \) into the expression \( wx-x \).
Evaluate the expression by following steps:
- step0: Evaluate:
\(wx-x\)
- step1: Substitute:
\(-\left(-5\right)-\left(-5\right)\)
- step2: Remove the parentheses:
\(5-\left(-5\right)\)
- step3: Remove the parentheses:
\(5+5\)
- step4: Add the numbers:
\(10\)
When \( w=-1 \) and \( x=-5 \), the expression \( wx-x \) evaluates to 10.
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Simplifique esta solución Extra Insights
To evaluate the expression \( wx - x \) for \( w = -1 \) and \( x = -5 \), first substitute these values into the expression: \[ (-1)(-5) - (-5) = 5 + 5 = 10. \] So, the answer is \( \boxed{10} \). In multi-variable expressions, keep in mind the order of operations (PEMDAS/BODMAS). Always perform multiplication before addition or subtraction! It’s easy to rush and mix things up, so a careful approach will save you from common mistakes like miscalculating signs or operations.
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