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-7(z-2)+8z+9=18+7
We simplify the equation to the form, which is simple to understand
-7(z-2)+8z+9=18+7
Reorder the terms in parentheses
+(-7z+14)+8z+9=18+7
Remove unnecessary parentheses
-7z+14+8z+9=+18+7
We move all terms containing z to the left and all other terms to the right.
-7z+8z=+18+7-14-9
We simplify left and right side of the equation.
+1z=+2
We divide both sides of the equation by 1 to get z.
z=2
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