z+4-2z=2(z-1)

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Solution for z+4-2z=2(z-1) equation: 


Simplifying
z + 4 + -2z = 2(z + -1)

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

Combine like terms: z + -2z = -1z
4 + -1z = 2(z + -1)

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

Solving
4 + -1z = -2 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
4 + -1z + -2z = -2 + 2z + -2z

Combine like terms: -1z + -2z = -3z
4 + -3z = -2 + 2z + -2z

Combine like terms: 2z + -2z = 0
4 + -3z = -2 + 0
4 + -3z = -2

Add '-4' to each side of the equation.
4 + -4 + -3z = -2 + -4

Combine like terms: 4 + -4 = 0
0 + -3z = -2 + -4
-3z = -2 + -4

Combine like terms: -2 + -4 = -6
-3z = -6

Divide each side by '-3'.
z = 2

Simplifying
z = 2

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