Solving: Examples

Solving

Example 1 Solve 2x< 9.

Divide both sides by 2. Since 2 > 0 the sign will remain the same.

Sol_ex1

Example 2 Solve .

Multiply both sides by 4. Since 4 > 0 the sign will remain the same.

Sol_ex2-2

Example 3 Solve -2x < 5.

Divide both sides of the inequality by - 2, remember to reverse the inequality symbol.

-2x < 5
-2x > 5
-2 -2
x > -