-108=2-5(6+2r)

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Solution for -108=2-5(6+2r) equation:


Simplifying
-108 = 2 + -5(6 + 2r)
-108 = 2 + (6 * -5 + 2r * -5)
-108 = 2 + (-30 + -10r)

Combine like terms: 2 + -30 = -28
-108 = -28 + -10r

Solving
-108 = -28 + -10r

Solving for variable 'r'.

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

Add '10r' to each side of the equation.
-108 + 10r = -28 + -10r + 10r

Combine like terms: -10r + 10r = 0
-108 + 10r = -28 + 0
-108 + 10r = -28

Add '108' to each side of the equation.
-108 + 108 + 10r = -28 + 108

Combine like terms: -108 + 108 = 0
0 + 10r = -28 + 108
10r = -28 + 108

Combine like terms: -28 + 108 = 80
10r = 80

Divide each side by '10'.
r = 8

Simplifying
r = 8

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