2(-5+8r)=-138

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Solution for 2(-5+8r)=-138 equation: 


Simplifying
2(-5 + 8r) = -138
(-5 * 2 + 8r * 2) = -138
(-10 + 16r) = -138

Solving
-10 + 16r = -138

Solving for variable 'r'.

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

Add '10' to each side of the equation.
-10 + 10 + 16r = -138 + 10

Combine like terms: -10 + 10 = 0
0 + 16r = -138 + 10
16r = -138 + 10

Combine like terms: -138 + 10 = -128
16r = -128

Divide each side by '16'.
r = -8

Simplifying
r = -8

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