7(8+7r)=336

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Solution for 7(8+7r)=336 equation: 


Simplifying
7(8 + 7r) = 336
(8 * 7 + 7r * 7) = 336
(56 + 49r) = 336

Solving
56 + 49r = 336

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 + 49r = 336 + -56

Combine like terms: 56 + -56 = 0
0 + 49r = 336 + -56
49r = 336 + -56

Combine like terms: 336 + -56 = 280
49r = 280

Divide each side by '49'.
r = 5.714285714

Simplifying
r = 5.714285714

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