Linear Inequalities Cc6Ca7
1. **Problem 1:** Solve the inequality $3x + 5 \leq 3x - 3$.
2. **Step 1:** Write the inequality:
$$3x + 5 \leq 3x - 3$$
3. **Step 2:** Subtract $3x$ from both sides:
$$3x - 3x + 5 \leq 3x - 3x - 3$$
$$5 \leq -3$$
4. **Step 3:** This is a false statement since $5$ is not less than or equal to $-3$.
5. **Conclusion:** There is no solution to this inequality.
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1. **Problem 2:** Solve the inequality $x + 2 \geq 4x - 7$.
2. **Step 1:** Write the inequality:
$$x + 2 \geq 4x - 7$$
3. **Step 2:** Subtract $4x$ from both sides:
$$x - 4x + 2 \geq 4x - 4x - 7$$
$$-3x + 2 \geq -7$$
4. **Step 3:** Subtract $2$ from both sides:
$$-3x \geq -9$$
5. **Step 4:** Divide both sides by $-3$ and reverse the inequality sign:
$$x \leq 3$$
6. **Step 5:** Solution set is $x \leq 3$.
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1. **Problem 3:** Solve the inequality $6y - 30 > 20 + y$.
2. **Step 1:** Write the inequality:
$$6y - 30 > 20 + y$$
3. **Step 2:** Subtract $y$ from both sides:
$$6y - y - 30 > 20$$
$$5y - 30 > 20$$
4. **Step 3:** Add $30$ to both sides:
$$5y > 50$$
5. **Step 4:** Divide both sides by $5$:
$$y > 10$$
6. **Step 5:** Solution set is $y > 10$.
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1. **Problem 4:** Solve the inequality $5y - 20 < 10y$.
2. **Step 1:** Write the inequality:
$$5y - 20 < 10y$$
3. **Step 2:** Subtract $5y$ from both sides:
$$-20 < 5y$$
4. **Step 3:** Divide both sides by $5$:
$$-4 < y$$
5. **Step 4:** Rewrite as:
$$y > -4$$
6. **Step 5:** Solution set is $y > -4$.
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1. **Problem 5:** Solve the inequality $\frac{4x}{2} + 3 \geq 6x - 5$.
2. **Step 1:** Simplify the left side:
$$2x + 3 \geq 6x - 5$$
3. **Step 2:** Subtract $6x$ from both sides:
$$2x - 6x + 3 \geq -5$$
$$-4x + 3 \geq -5$$
4. **Step 3:** Subtract $3$ from both sides:
$$-4x \geq -8$$
5. **Step 4:** Divide both sides by $-4$ and reverse the inequality sign:
$$x \leq 2$$
6. **Step 5:** Solution set is $x \leq 2$.
Each problem was solved step-by-step with explanations and the solution sets are:
1) No solution
2) $x \leq 3$
3) $y > 10$
4) $y > -4$
5) $x \leq 2$