x•2<20

To solve the inequality \( x \cdot 2 < 20 \), you can follow these steps:

1. Divide both sides of the inequality by 2 to isolate \( x \): \[ x < \frac{20}{2} \]

2. Perform the division: \[ x < 10 \]

So, the solution to the inequality \( x \cdot 2 < 20 \) is \( x < 10 \).