[z-3]=4

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Solution for [z-3]=4 equation: 


Simplifying
[z + -3] = 4

Reorder the terms:
[-3 + z] = 4

Remove brackets around [-3 + z]
-3 + z = 4

Solving
-3 + z = 4

Solving for variable 'z'.

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

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

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

Combine like terms: 4 + 3 = 7
z = 7

Simplifying
z = 7

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