(R+9)(r+9)=0

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Solution for (R+9)(r+9)=0 equation:


Simplifying
(R + 9)(r + 9) = 0

Reorder the terms:
(9 + R)(r + 9) = 0

Reorder the terms:
(9 + R)(9 + r) = 0

Multiply (9 + R) * (9 + r)
(9(9 + r) + R(9 + r)) = 0
((9 * 9 + r * 9) + R(9 + r)) = 0
((81 + 9r) + R(9 + r)) = 0
(81 + 9r + (9 * R + r * R)) = 0
(81 + 9r + (9R + rR)) = 0

Reorder the terms:
(81 + 9R + 9r + rR) = 0
(81 + 9R + 9r + rR) = 0

Solving
81 + 9R + 9r + rR = 0

Solving for variable 'R'.

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

Add '-81' to each side of the equation.
81 + 9R + 9r + -81 + rR = 0 + -81

Reorder the terms:
81 + -81 + 9R + 9r + rR = 0 + -81

Combine like terms: 81 + -81 = 0
0 + 9R + 9r + rR = 0 + -81
9R + 9r + rR = 0 + -81

Combine like terms: 0 + -81 = -81
9R + 9r + rR = -81

Add '-9r' to each side of the equation.
9R + 9r + -9r + rR = -81 + -9r

Combine like terms: 9r + -9r = 0
9R + 0 + rR = -81 + -9r
9R + rR = -81 + -9r

Reorder the terms:
81 + 9R + 9r + rR = -81 + -9r + 81 + 9r

Reorder the terms:
81 + 9R + 9r + rR = -81 + 81 + -9r + 9r

Combine like terms: -81 + 81 = 0
81 + 9R + 9r + rR = 0 + -9r + 9r
81 + 9R + 9r + rR = -9r + 9r

Combine like terms: -9r + 9r = 0
81 + 9R + 9r + rR = 0

The solution to this equation could not be determined.

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