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-5(z-1)+4z-1=49
We move all terms to the left:
-5(z-1)+4z-1-(49)=0
We add all the numbers together, and all the variables
4z-5(z-1)-50=0
We multiply parentheses
4z-5z+5-50=0
We add all the numbers together, and all the variables
-1z-45=0
We move all terms containing z to the left, all other terms to the right
-z=45
z=45/-1
z=-45
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