To solve the inequality
\[ \frac{3}{7}(35x - 14) \leq \frac{21x}{2} + 3, \]
we first simplify the left side:
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Distribute \(\frac{3}{7}\): \[ \frac{3}{7} \times 35x - \frac{3}{7} \times 14 = 15x - 6. \] Thus, the left side simplifies to \(15x - 6\).
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Rewrite the inequality: \[ 15x - 6 \leq \frac{21x}{2} + 3. \]
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Next, we need to eliminate the fraction on the right side. We can multiply the entire inequality by 2 (which does not change the inequality sign as we are multiplying by a positive number): \[ 2(15x - 6) \leq 21x + 6. \]
This simplifies to: \[ 30x - 12 \leq 21x + 6. \]
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Now, we isolate \(x\). Subtract \(21x\) from both sides: \[ 30x - 21x - 12 \leq 6, \] which simplifies to: \[ 9x - 12 \leq 6. \]
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Then, add 12 to both sides: \[ 9x \leq 18. \]
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Finally, divide both sides by 9: \[ x \leq 2. \]
So, the solution to the inequality is \(x \leq 2\).
Graphing the solution
To graph the solution on the number line from -7 to 7:
- Draw a closed circle at \(2\) (indicating that \(2\) is included in the solution).
- Shade the region to the left of \(2\) to indicate all values less than or equal to \(2\).
Final Step
You can drag a point to the number line at \(2\) and shade to the left to graph the solution \(x \leq 2\).