2[2r+4]=-16

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Solution for 2[2r+4]=-16 equation: 


Simplifying
2[2r + 4] = -16

Reorder the terms:
2[4 + 2r] = -16
[4 * 2 + 2r * 2] = -16
[8 + 4r] = -16

Solving
8 + 4r = -16

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + 4r = -16 + -8

Combine like terms: 8 + -8 = 0
0 + 4r = -16 + -8
4r = -16 + -8

Combine like terms: -16 + -8 = -24
4r = -24

Divide each side by '4'.
r = -6

Simplifying
r = -6

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