2r-18=4r

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Solution for 2r-18=4r equation:


Simplifying
2r + -18 = 4r

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

Solving
-18 + 2r = 4r

Solving for variable 'r'.

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

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

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

Combine like terms: 4r + -4r = 0
-18 + -2r = 0

Add '18' to each side of the equation.
-18 + 18 + -2r = 0 + 18

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

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

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

Simplifying
r = -9

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