2(z-1)=14

Divide each term in 2(z-1)=14 by 2.

2(z-1)2=142

Cancel the common factor of 2.

Cancel the common factor.

2(z-1)2=142

Divide z-1 by 1.

z-1=142

z-1=142

Divide 14 by 2.

z-1=7

z-1=7

Add 1 to both sides of the equation.

z=7+1

Add 7 and 1.

z=8

z=8

Solve for z 2(z-1)=14