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-7+13x+2x+8=0
We simplify the equation to the form, which is simple to understand
-7+13x+2x+8=0
We move all terms containing x to the left and all other terms to the right.
+13x+2x=0+7-8
We simplify left and right side of the equation.
+15x=-1
We divide both sides of the equation by 15 to get x.
x=-0.066666666666667
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