-7(7-2r)=-105

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Solution for -7(7-2r)=-105 equation: 


Simplifying
-7(7 + -2r) = -105
(7 * -7 + -2r * -7) = -105
(-49 + 14r) = -105

Solving
-49 + 14r = -105

Solving for variable 'r'.

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

Add '49' to each side of the equation.
-49 + 49 + 14r = -105 + 49

Combine like terms: -49 + 49 = 0
0 + 14r = -105 + 49
14r = -105 + 49

Combine like terms: -105 + 49 = -56
14r = -56

Divide each side by '14'.
r = -4

Simplifying
r = -4

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