Solve each inequality. Give the solution set in interval notation. 3(x+5)+1≥5+3x

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Start by expanding the left side of the inequality: $3(x+5) + 1 \geq 5 + 3x$. Distribute the 3 to both $x$ and 5, which gives $3x + 15 + 1 \geq 5 + 3x$.

Combine like terms on the left side: $3x + 16 \geq 5 + 3x$.

Next, subtract \$3x$ from both sides to isolate the constants: $3x + 16 - 3x \geq 5 + 3x - 3x$, which simplifies to $16 \geq 5$.

Analyze the resulting inequality $16 \geq 5$. Since this is always true, it means the original inequality holds for all values of $x$.

Therefore, express the solution set in interval notation as all real numbers: $(-\infty, \infty)$.

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주요 개념

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Solving Linear Inequalities

Solving linear inequalities involves isolating the variable on one side to find the range of values that satisfy the inequality. Similar to equations, operations like addition, subtraction, multiplication, and division are used, but special care is needed when multiplying or dividing by negative numbers, as this reverses the inequality sign.

Distributive Property

The distributive property allows you to multiply a single term across terms inside parentheses, such as a(b + c) = ab + ac. This is essential for simplifying expressions before solving inequalities, ensuring all terms are combined correctly for easier manipulation.

Interval Notation

Interval notation is a concise way to represent solution sets of inequalities using intervals. It uses parentheses for values not included (open intervals) and brackets for values included (closed intervals), clearly showing the range of solutions on the number line.