(R+7)(r-9)=0

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Solution for (R+7)(r-9)=0 equation:


Simplifying
(R + 7)(r + -9) = 0

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

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

Multiply (7 + R) * (-9 + r)
(7(-9 + r) + R(-9 + r)) = 0
((-9 * 7 + r * 7) + R(-9 + r)) = 0
((-63 + 7r) + R(-9 + r)) = 0
(-63 + 7r + (-9 * R + r * R)) = 0
(-63 + 7r + (-9R + rR)) = 0

Reorder the terms:
(-63 + -9R + 7r + rR) = 0
(-63 + -9R + 7r + rR) = 0

Solving
-63 + -9R + 7r + rR = 0

Solving for variable 'R'.

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

Add '63' to each side of the equation.
-63 + -9R + 7r + 63 + rR = 0 + 63

Reorder the terms:
-63 + 63 + -9R + 7r + rR = 0 + 63

Combine like terms: -63 + 63 = 0
0 + -9R + 7r + rR = 0 + 63
-9R + 7r + rR = 0 + 63

Combine like terms: 0 + 63 = 63
-9R + 7r + rR = 63

Add '-7r' to each side of the equation.
-9R + 7r + -7r + rR = 63 + -7r

Combine like terms: 7r + -7r = 0
-9R + 0 + rR = 63 + -7r
-9R + rR = 63 + -7r

Reorder the terms:
-63 + -9R + 7r + rR = 63 + -7r + -63 + 7r

Reorder the terms:
-63 + -9R + 7r + rR = 63 + -63 + -7r + 7r

Combine like terms: 63 + -63 = 0
-63 + -9R + 7r + rR = 0 + -7r + 7r
-63 + -9R + 7r + rR = -7r + 7r

Combine like terms: -7r + 7r = 0
-63 + -9R + 7r + rR = 0

The solution to this equation could not be determined.

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