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-7z-3z=9z-4+7z
We simplify the equation to the form, which is simple to understand
-7z-3z=9z-4+7z
We move all terms containing z to the left and all other terms to the right.
-7z-3z-9z-7z=-4
We simplify left and right side of the equation.
-26z=-4
We divide both sides of the equation by -26 to get z.
z=0.153846153846
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