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z+8+3z=-3
We simplify the equation to the form, which is simple to understand
z+8+3z=-3
We move all terms containing z to the left and all other terms to the right.
+1z+3z=-3-8
We simplify left and right side of the equation.
+4z=-11
We divide both sides of the equation by 4 to get z.
z=-2.75
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