-6+2(r+2)-5=20

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Solution for -6+2(r+2)-5=20 equation: 


Simplifying
-6 + 2(r + 2) + -5 = 20

Reorder the terms:
-6 + 2(2 + r) + -5 = 20
-6 + (2 * 2 + r * 2) + -5 = 20
-6 + (4 + 2r) + -5 = 20

Reorder the terms:
-6 + 4 + -5 + 2r = 20

Combine like terms: -6 + 4 = -2
-2 + -5 + 2r = 20

Combine like terms: -2 + -5 = -7
-7 + 2r = 20

Solving
-7 + 2r = 20

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + 2r = 20 + 7

Combine like terms: -7 + 7 = 0
0 + 2r = 20 + 7
2r = 20 + 7

Combine like terms: 20 + 7 = 27
2r = 27

Divide each side by '2'.
r = 13.5

Simplifying
r = 13.5

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