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3.1.1 \( \frac{7^{x+1}-7^{x}}{6.7^{x}} \)

Ask by Horton Ramos. in South Africa
Mar 09,2025

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Tutor-Verified Answer

Answer

The expression simplifies to 1.

Solution

1. Write the original expression: \[ \frac{7^{x+1} - 7^x}{6 \cdot 7^x} \] 2. Factor \(7^x\) out of the numerator: \[ 7^{x+1} - 7^x = 7^x \cdot 7 - 7^x = 7^x(7 - 1) \] 3. Substitute back into the expression: \[ \frac{7^x(7 - 1)}{6 \cdot 7^x} \] 4. Simplify the numerator: \[ 7 - 1 = 6 \] So the expression becomes: \[ \frac{7^x \cdot 6}{6 \cdot 7^x} \] 5. Cancel the common factors \(7^x\) and 6 in the numerator and denominator: \[ \frac{7^x \cdot 6}{6 \cdot 7^x} = 1 \] The final simplified value is: \[ 1 \]

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Simplify this solution

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Let's simplify your expression step by step! First, notice that you can rewrite \( 7^{x+1} \) as \( 7^x \cdot 7 \). This takes your expression to: \[ \frac{7 \cdot 7^x - 7^x}{6 \cdot 7^x} \] Now, factoring out \( 7^x \) from the numerator gives us: \[ \frac{7^x (7 - 1)}{6 \cdot 7^x} = \frac{6 \cdot 7^x}{6 \cdot 7^x} = 1 \] So, your expression simplifies nicely to just \( 1 \)! Isn't it fascinating how algebra can turn what looks like a complicated expression into a simple number? Simplifying expressions helps unlock the beauty of math, revealing how everything is interconnected, just like a puzzle where each piece fits perfectly together! Plus, it’s a great skill for solving real-world problems, like finding quantities in finance or computing areas in geometry.

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