10t−14≥0 inequation

Given the inequality:
$$10 t - 14 \geq 0$$
To solve this inequality, we must first solve the corresponding equation:
$$10 t - 14 = 0$$
Solve:
$$x_{1} = 1.4$$
$$x_{1} = 1.4$$
This roots
$$x_{1} = 1.4$$
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
$$x_{0} \leq x_{1}$$
For example, let's take the point
$$x_{0} = x_{1} - \frac{1}{10}$$
=
$$- \frac{1}{10} + 1.4$$
=
$$1.3$$
substitute to the expression
$$10 t - 14 \geq 0$$
$$10 t - 14 \geq 0$$

-14 + 10*t >= 0

Then
$$x \leq 1.4$$
no execute
the solution of our inequality is:
$$x \geq 1.4$$

         _____  
        /
-------•-------
       x1