18=-3r-3r

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Solution for 18=-3r-3r equation:


Simplifying
18 = -3r + -3r

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

Solving
18 = -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.
18 + 6r = -6r + 6r

Combine like terms: -6r + 6r = 0
18 + 6r = 0

Add '-18' to each side of the equation.
18 + -18 + 6r = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 6r = 0 + -18
6r = 0 + -18

Combine like terms: 0 + -18 = -18
6r = -18

Divide each side by '6'.
r = -3

Simplifying
r = -3

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