3r-(-18r)=

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


Simplifying
3r + -1(-18r) = 0

Remove parenthesis around (-18r)
3r + -1 * -18r = 0

Multiply -1 * -18
3r + 18r = 0

Combine like terms: 3r + 18r = 21r
21r = 0

Solving
21r = 0

Solving for variable 'r'.

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

Divide each side by '21'.
r = 0

Simplifying
r = 0

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