18r+-4r+9r+-5r=-18

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Solution for 18r+-4r+9r+-5r=-18 equation: 


Simplifying
18r + -4r + 9r + -5r = -18

Combine like terms: 18r + -4r = 14r
14r + 9r + -5r = -18

Combine like terms: 14r + 9r = 23r
23r + -5r = -18

Combine like terms: 23r + -5r = 18r
18r = -18

Solving
18r = -18

Solving for variable 'r'.

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

Divide each side by '18'.
r = -1

Simplifying
r = -1

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