Given the inequality:
5−11x≤2To solve this inequality, we must first solve the corresponding equation:
5−11x=2Solve:
Given the linear equation:
5-11*x = 2
Move free summands (without x)
from left part to right part, we given:
−11x=−3Divide both parts of the equation by -11
x = -3 / (-11)
x1=113x1=113This roots
x1=113is the points with change the sign of the inequality expression.
First define with the sign to the leftmost point:
x0≤x1For example, let's take the point
x0=x1−101=
−101+113=
11019substitute to the expression
5−11x≤25−11011⋅19≤231
-- <= 2
10
but
31
-- >= 2
10
Then
x≤113no execute
the solution of our inequality is:
x≥113 _____
/
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x1