r+qx=z

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Solution for r+qx=z equation: 


Simplifying
r + qx = z

Reorder the terms:
qx + r = z

Solving
qx + r = z

Solving for variable 'q'.

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

Add '-1r' to each side of the equation.
qx + r + -1r = -1r + z

Combine like terms: r + -1r = 0
qx + 0 = -1r + z
qx = -1r + z

Divide each side by 'x'.
q = -1rx-1 + x-1z

Simplifying
q = -1rx-1 + x-1z

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