-3(-7-6r)=-105

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Solution for -3(-7-6r)=-105 equation: 


Simplifying
-3(-7 + -6r) = -105
(-7 * -3 + -6r * -3) = -105
(21 + 18r) = -105

Solving
21 + 18r = -105

Solving for variable 'r'.

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

Add '-21' to each side of the equation.
21 + -21 + 18r = -105 + -21

Combine like terms: 21 + -21 = 0
0 + 18r = -105 + -21
18r = -105 + -21

Combine like terms: -105 + -21 = -126
18r = -126

Divide each side by '18'.
r = -7

Simplifying
r = -7

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