144=-r-2*r

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Solution for 144=-r-2*r equation:


Simplifying
144 = -1r + -2r

Combine like terms: -1r + -2r = -3r
144 = -3r

Solving
144 = -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
144 + 3r = -3r + 3r

Combine like terms: -3r + 3r = 0
144 + 3r = 0

Add '-144' to each side of the equation.
144 + -144 + 3r = 0 + -144

Combine like terms: 144 + -144 = 0
0 + 3r = 0 + -144
3r = 0 + -144

Combine like terms: 0 + -144 = -144
3r = -144

Divide each side by '3'.
r = -48

Simplifying
r = -48

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