3x ≤ 21 x ≤
7
To solve the inequality 3x ≤ 21, we need to isolate the variable x.
Step 1: Divide both sides of the inequality by 3 to isolate x.
3x/3 ≤ 21/3
Simplifying, we get:
x ≤ 7
Therefore, the solution to the inequality 3x ≤ 21 is x ≤ 7.
To solve the inequality 3x ≤ 21, you need to isolate the variable x. Here's how:
1. Start by dividing both sides of the inequality by 3. This is allowed because dividing or multiplying both sides of an inequality by a positive number does not change the direction of the inequality.
(3x)/3 ≤ 21/3
x ≤ 7
Therefore, the solution to the inequality 3x ≤ 21 is x ≤ 7.
To explain it step by step:
- First, divide both sides of the inequality by 3 to isolate the variable x.
- Simplify the equation by dividing 21 by 3 to get 7.
- The resulting equation is x ≤ 7, which means the value of x must be less than or equal to 7 in order to satisfy the original inequality.