2(2z-1)-21=

Solution for 2(2z-1)-21= equation:

Simplifying
2(2z + -1) + -21 = 0

Reorder the terms:
2(-1 + 2z) + -21 = 0
(-1 * 2 + 2z * 2) + -21 = 0
(-2 + 4z) + -21 = 0

Reorder the terms:
-2 + -21 + 4z = 0

Combine like terms: -2 + -21 = -23
-23 + 4z = 0

Solving
-23 + 4z = 0

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '23' to each side of the equation.
-23 + 23 + 4z = 0 + 23

Combine like terms: -23 + 23 = 0
0 + 4z = 0 + 23
4z = 0 + 23

Combine like terms: 0 + 23 = 23
4z = 23

Divide each side by '4'.
z = 5.75

Simplifying
z = 5.75