2(z+4)=12

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Solution for 2(z+4)=12 equation: 



2(z+4)=12

We move all terms to the left:

2(z+4)-(12)=0

We multiply parentheses

2z+8-12=0

We add all the numbers together, and all the variables

2z-4=0

We move all terms containing z to the left, all other terms to the right

2z=4

z=4/2

z=2

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