4r=2r-18

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Solution for 4r=2r-18 equation: 


Simplifying
4r = 2r + -18

Reorder the terms:
4r = -18 + 2r

Solving
4r = -18 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
4r + -2r = -18 + 2r + -2r

Combine like terms: 4r + -2r = 2r
2r = -18 + 2r + -2r

Combine like terms: 2r + -2r = 0
2r = -18 + 0
2r = -18

Divide each side by '2'.
r = -9

Simplifying
r = -9

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