-9(r+3)-9r=-3r-(3r)+8

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Solution for -9(r+3)-9r=-3r-(3r)+8 equation:


Simplifying
-9(r + 3) + -9r = -3r + -1(3r) + 8

Reorder the terms:
-9(3 + r) + -9r = -3r + -1(3r) + 8
(3 * -9 + r * -9) + -9r = -3r + -1(3r) + 8
(-27 + -9r) + -9r = -3r + -1(3r) + 8

Combine like terms: -9r + -9r = -18r
-27 + -18r = -3r + -1(3r) + 8

Remove parenthesis around (3r)
-27 + -18r = -3r + -1 * 3r + 8

Multiply -1 * 3
-27 + -18r = -3r + -3r + 8

Reorder the terms:
-27 + -18r = 8 + -3r + -3r

Combine like terms: -3r + -3r = -6r
-27 + -18r = 8 + -6r

Solving
-27 + -18r = 8 + -6r

Solving for variable 'r'.

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

Add '6r' to each side of the equation.
-27 + -18r + 6r = 8 + -6r + 6r

Combine like terms: -18r + 6r = -12r
-27 + -12r = 8 + -6r + 6r

Combine like terms: -6r + 6r = 0
-27 + -12r = 8 + 0
-27 + -12r = 8

Add '27' to each side of the equation.
-27 + 27 + -12r = 8 + 27

Combine like terms: -27 + 27 = 0
0 + -12r = 8 + 27
-12r = 8 + 27

Combine like terms: 8 + 27 = 35
-12r = 35

Divide each side by '-12'.
r = -2.916666667

Simplifying
r = -2.916666667

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