r-4z=4k

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Solution for r-4z=4k equation: 


Simplifying
r + -4z = 4k

Solving
r + -4z = 4k

Solving for variable 'r'.

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

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

Combine like terms: -4z + 4z = 0
r + 0 = 4k + 4z
r = 4k + 4z

Simplifying
r = 4k + 4z

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