7r(5+7r)=

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Solution for 7r(5+7r)= equation: 


Simplifying
7r(5 + 7r) = 0
(5 * 7r + 7r * 7r) = 0
(35r + 49r2) = 0

Solving
35r + 49r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '7r'.
7r(5 + 7r) = 0

Ignore the factor 7.

Subproblem 1
Set the factor 'r' equal to zero and attempt to solve:

Simplifying
r = 0

Solving
r = 0

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

Simplifying
r = 0

Subproblem 2
Set the factor '(5 + 7r)' equal to zero and attempt to solve:

Simplifying
5 + 7r = 0

Solving
5 + 7r = 0

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

Add '-5' to each side of the equation.
5 + -5 + 7r = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 7r = 0 + -5
7r = 0 + -5

Combine like terms: 0 + -5 = -5
7r = -5

Divide each side by '7'.
r = -0.7142857143

Simplifying
r = -0.7142857143
Solution
r = {0, -0.7142857143}

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