(5r)+(3r-3)+(r-6)=180

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Solution for (5r)+(3r-3)+(r-6)=180 equation:


Simplifying
(5r) + (3r + -3) + (r + -6) = 180

Reorder the terms:
(5r) + (-3 + 3r) + (r + -6) = 180

Remove parenthesis around (-3 + 3r)
(5r) + -3 + 3r + (r + -6) = 180

Reorder the terms:
(5r) + -3 + 3r + (-6 + r) = 180

Remove parenthesis around (-6 + r)
(5r) + -3 + 3r + -6 + r = 180

Reorder the terms:
-3 + -6 + (5r) + 3r + r = 180

Combine like terms: -3 + -6 = -9
-9 + (5r) + 3r + r = 180

Combine like terms: (5r) + 3r = 8r
-9 + 8r + r = 180

Combine like terms: 8r + r = 9r
-9 + 9r = 180

Solving
-9 + 9r = 180

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + 9r = 180 + 9

Combine like terms: -9 + 9 = 0
0 + 9r = 180 + 9
9r = 180 + 9

Combine like terms: 180 + 9 = 189
9r = 189

Divide each side by '9'.
r = 21

Simplifying
r = 21

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