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3,14+z-21=3z
We simplify the equation to the form, which is simple to understand
3,14+z-21=3z
We move all terms containing z to the left and all other terms to the right.
+1z-3z=-3.14+21
We simplify left and right side of the equation.
-2z=+17.86
We divide both sides of the equation by -2 to get z.
z=-8.93
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