r(x)=x+8

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Solution for r(x)=x+8 equation: 


Simplifying
r(x) = x + 8

Multiply r * x
rx = x + 8

Reorder the terms:
rx = 8 + x

Solving
rx = 8 + x

Solving for variable 'r'.

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

Divide each side by 'x'.
r = 8x-1 + 1

Simplifying
r = 8x-1 + 1

Reorder the terms:
r = 1 + 8x-1

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