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11z-5-=9z+7
We simplify the equation to the form, which is simple to understand
11z-5-=9z+7
We move all terms containing z to the left and all other terms to the right.
+11z+9z=+7+5
We simplify left and right side of the equation.
+20z=+12
We divide both sides of the equation by 20 to get z.
z=0.6
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