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525+.21z=850
We simplify the equation to the form, which is simple to understand
525+.21z=850
We move all terms containing z to the left and all other terms to the right.
+ 0.21z=+850-525
We simplify left and right side of the equation.
+ 0.21z=+325
We divide both sides of the equation by 0.21 to get z.
z=1547.619047619
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