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138=-2x-4(-6x-7)
We simplify the equation to the form, which is simple to understand
138=-2x-4(-6x-7)
Reorder the terms in parentheses
138=-2x+(+24x+28)
Remove unnecessary parentheses
+138=-2x+24x+28
We move all terms containing x to the left and all other terms to the right.
+2x-24x=+28-138
We simplify left and right side of the equation.
-22x=-110
We divide both sides of the equation by -22 to get x.
x=5
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