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

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


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

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

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

Combine like terms: 4 + -5 = -1
-1 + 6r + 2r = -20

Combine like terms: 6r + 2r = 8r
-1 + 8r = -20

Solving
-1 + 8r = -20

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + 8r = -20 + 1

Combine like terms: -1 + 1 = 0
0 + 8r = -20 + 1
8r = -20 + 1

Combine like terms: -20 + 1 = -19
8r = -19

Divide each side by '8'.
r = -2.375

Simplifying
r = -2.375

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