-2(2-r)=4

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


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

Solving
-4 + 2r = 4

Solving for variable 'r'.

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

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

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

Combine like terms: 4 + 4 = 8
2r = 8

Divide each side by '2'.
r = 4

Simplifying
r = 4

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