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-1-7=-10-7z
We move all terms to the left:
-1-7-(-10-7z)=0
We add all the numbers together, and all the variables
-(-7z-10)-1-7=0
We add all the numbers together, and all the variables
-(-7z-10)-8=0
We get rid of parentheses
7z+10-8=0
We add all the numbers together, and all the variables
7z+2=0
We move all terms containing z to the left, all other terms to the right
7z=-2
z=-2/7
z=-2/7
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