2(z-1)=y
Divide each term in 2(z-1)=y by 2.
2(z-1)2=y2
Cancel the common factor of 2.
Cancel the common factor.
2(z-1)2=y2
Divide z-1 by 1.
z-1=y2
z-1=y2
z-1=y2
Add 1 to both sides of the equation.
z=y2+1
Solve for z 2(z-1)=y
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