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

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


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

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

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

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

Combine like terms: -5r + 2r = -3r
-1 + -3r = -20

Solving
-1 + -3r = -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 + -3r = -20 + 1

Combine like terms: -1 + 1 = 0
0 + -3r = -20 + 1
-3r = -20 + 1

Combine like terms: -20 + 1 = -19
-3r = -19

Divide each side by '-3'.
r = 6.333333333

Simplifying
r = 6.333333333

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