3(1+6r)=-87

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Solution for 3(1+6r)=-87 equation: 


Simplifying
3(1 + 6r) = -87
(1 * 3 + 6r * 3) = -87
(3 + 18r) = -87

Solving
3 + 18r = -87

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + 18r = -87 + -3

Combine like terms: 3 + -3 = 0
0 + 18r = -87 + -3
18r = -87 + -3

Combine like terms: -87 + -3 = -90
18r = -90

Divide each side by '18'.
r = -5

Simplifying
r = -5

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