2+8r-4=-18

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Solution for 2+8r-4=-18 equation: 


Simplifying
2 + 8r + -4 = -18

Reorder the terms:
2 + -4 + 8r = -18

Combine like terms: 2 + -4 = -2
-2 + 8r = -18

Solving
-2 + 8r = -18

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 + 8r = -18 + 2

Combine like terms: -2 + 2 = 0
0 + 8r = -18 + 2
8r = -18 + 2

Combine like terms: -18 + 2 = -16
8r = -16

Divide each side by '8'.
r = -2

Simplifying
r = -2

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