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z+(z+-6)+-2=-10
We move all terms to the left:
z+(z+-6)+-2-(-10)=0
We add all the numbers together, and all the variables
z+(z-6)-2+-(-10)=0
We add all the numbers together, and all the variables
z+(z-6)+8=0
We get rid of parentheses
z+z-6+8=0
We add all the numbers together, and all the variables
2z+2=0
We move all terms containing z to the left, all other terms to the right
2z=-2
z=-2/2
z=-1
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