4(2-r)=-18

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Solution for 4(2-r)=-18 equation: 


Simplifying
4(2 + -1r) = -18
(2 * 4 + -1r * 4) = -18
(8 + -4r) = -18

Solving
8 + -4r = -18

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + -4r = -18 + -8

Combine like terms: 8 + -8 = 0
0 + -4r = -18 + -8
-4r = -18 + -8

Combine like terms: -18 + -8 = -26
-4r = -26

Divide each side by '-4'.
r = 6.5

Simplifying
r = 6.5

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