8(7+7r)=-112

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Solution for 8(7+7r)=-112 equation: 


Simplifying
8(7 + 7r) = -112
(7 * 8 + 7r * 8) = -112
(56 + 56r) = -112

Solving
56 + 56r = -112

Solving for variable 'r'.

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

Add '-56' to each side of the equation.
56 + -56 + 56r = -112 + -56

Combine like terms: 56 + -56 = 0
0 + 56r = -112 + -56
56r = -112 + -56

Combine like terms: -112 + -56 = -168
56r = -168

Divide each side by '56'.
r = -3

Simplifying
r = -3

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