Mister Exam

3x-5 inequation

A inequation with variable

The solution

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3*x - 5 > 0
3x5>03 x - 5 > 0
3*x - 5 > 0
Detail solution
Given the inequality:
3x5>03 x - 5 > 0
To solve this inequality, we must first solve the corresponding equation:
3x5=03 x - 5 = 0
Solve:
Given the linear equation:
3*x-5 = 0

Move free summands (without x)
from left part to right part, we given:
3x=53 x = 5
Divide both parts of the equation by 3
x = 5 / (3)

x1=53x_{1} = \frac{5}{3}
x1=53x_{1} = \frac{5}{3}
This roots
x1=53x_{1} = \frac{5}{3}
is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
x0<x1x_{0} < x_{1}
For example, let's take the point
x0=x1110x_{0} = x_{1} - \frac{1}{10}
=
110+53- \frac{1}{10} + \frac{5}{3}
=
4730\frac{47}{30}
substitute to the expression
3x5>03 x - 5 > 0
5+34730>0-5 + \frac{3 \cdot 47}{30} > 0
-3/10 > 0

Then
x<53x < \frac{5}{3}
no execute
the solution of our inequality is:
x>53x > \frac{5}{3}
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Solving inequality on a graph
0123456-5-4-3-2-1-5050
Rapid solution [src]
And(5/3 < x, x < oo)
53<xx<\frac{5}{3} < x \wedge x < \infty
(5/3 < x)∧(x < oo)
Rapid solution 2 [src]
(5/3, oo)
x in (53,)x\ in\ \left(\frac{5}{3}, \infty\right)
x in Interval.open(5/3, oo)