Solve for x: -2x-4>8
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given the inequality:
-2x -4 > 8
Find the value of x.
Solution:
Transpose -4 in the other side of the equation. Note that when transposing a number, the sign changes.
-2x -4 > 8
-2x > 8 + 4
-2x > 12
Divide both sides by -2 in order to get the value of x. A common rule for inequalities, that whenever a negative number is multiplied or divided on either side of the equation, the inequality sign changes.
-2x/-2 > 12/-2
x < -6
The value of x is less than -6.