Mister Exam

-5x_<-10 inequation

A inequation with variable

The solution

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-5*x <= -10
5x10- 5 x \leq -10
-5*x <= -10
Detail solution
Given the inequality:
5x10- 5 x \leq -10
To solve this inequality, we must first solve the corresponding equation:
5x=10- 5 x = -10
Solve:
Given the linear equation:
-5*x = -10

Divide both parts of the equation by -5
x = -10 / (-5)

x1=2x_{1} = 2
x1=2x_{1} = 2
This roots
x1=2x_{1} = 2
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
x0x1x_{0} \leq x_{1}
For example, let's take the point
x0=x1110x_{0} = x_{1} - \frac{1}{10}
=
110+2- \frac{1}{10} + 2
=
1910\frac{19}{10}
substitute to the expression
5x10- 5 x \leq -10
5191010- \frac{5 \cdot 19}{10} \leq -10
-19/2 <= -10

but
-19/2 >= -10

Then
x2x \leq 2
no execute
the solution of our inequality is:
x2x \geq 2
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Solving inequality on a graph
012345678-5-4-3-2-1-5050
Rapid solution [src]
And(2 <= x, x < oo)
2xx<2 \leq x \wedge x < \infty
(2 <= x)∧(x < oo)
Rapid solution 2 [src]
[2, oo)
x in [2,)x\ in\ \left[2, \infty\right)
x in Interval(2, oo)