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20z-12=4(4z+3)
We simplify the equation to the form, which is simple to understand
20z-12=4(4z+3)
Reorder the terms in parentheses
20z-12=+(+16z+12)
Remove unnecessary parentheses
+20z-12=+16z+12
We move all terms containing z to the left and all other terms to the right.
+20z-16z=+12+12
We simplify left and right side of the equation.
+4z=+24
We divide both sides of the equation by 4 to get z.
z=6
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