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2(2z+3)-8=30
We simplify the equation to the form, which is simple to understand
2(2z+3)-8=30
Reorder the terms in parentheses
+(+4z+6)-8=30
Remove unnecessary parentheses
+4z+6-8=+30
We move all terms containing z to the left and all other terms to the right.
+4z=+30-6+8
We simplify left and right side of the equation.
+4z=+32
We divide both sides of the equation by 4 to get z.
z=8
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