-2(1-r)=1

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Solution for -2(1-r)=1 equation: 


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

Solving
-2 + 2r = 1

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + 2r = 1 + 2

Combine like terms: -2 + 2 = 0
0 + 2r = 1 + 2
2r = 1 + 2

Combine like terms: 1 + 2 = 3
2r = 3

Divide each side by '2'.
r = 1.5

Simplifying
r = 1.5

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