-(1-r)=4r+8

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Solution for -(1-r)=4r+8 equation:


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

Reorder the terms:
-1 + 1r = 8 + 4r

Solving
-1 + 1r = 8 + 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.
-1 + 1r + -4r = 8 + 4r + -4r

Combine like terms: 1r + -4r = -3r
-1 + -3r = 8 + 4r + -4r

Combine like terms: 4r + -4r = 0
-1 + -3r = 8 + 0
-1 + -3r = 8

Add '1' to each side of the equation.
-1 + 1 + -3r = 8 + 1

Combine like terms: -1 + 1 = 0
0 + -3r = 8 + 1
-3r = 8 + 1

Combine like terms: 8 + 1 = 9
-3r = 9

Divide each side by '-3'.
r = -3

Simplifying
r = -3

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