9r-18r-5=13

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Solution for 9r-18r-5=13 equation:


Simplifying
9r + -18r + -5 = 13

Reorder the terms:
-5 + 9r + -18r = 13

Combine like terms: 9r + -18r = -9r
-5 + -9r = 13

Solving
-5 + -9r = 13

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + -9r = 13 + 5

Combine like terms: -5 + 5 = 0
0 + -9r = 13 + 5
-9r = 13 + 5

Combine like terms: 13 + 5 = 18
-9r = 18

Divide each side by '-9'.
r = -2

Simplifying
r = -2

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