(D-3)(d+9)=

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Solution for (D-3)(d+9)= equation:


Simplifying
(D + -3)(d + 9) = 0

Reorder the terms:
(-3 + D)(d + 9) = 0

Reorder the terms:
(-3 + D)(9 + d) = 0

Multiply (-3 + D) * (9 + d)
(-3(9 + d) + D(9 + d)) = 0
((9 * -3 + d * -3) + D(9 + d)) = 0
((-27 + -3d) + D(9 + d)) = 0
(-27 + -3d + (9 * D + d * D)) = 0
(-27 + -3d + (9D + dD)) = 0

Reorder the terms:
(-27 + 9D + -3d + dD) = 0
(-27 + 9D + -3d + dD) = 0

Solving
-27 + 9D + -3d + dD = 0

Solving for variable 'D'.

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

Add '27' to each side of the equation.
-27 + 9D + -3d + 27 + dD = 0 + 27

Reorder the terms:
-27 + 27 + 9D + -3d + dD = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 9D + -3d + dD = 0 + 27
9D + -3d + dD = 0 + 27

Combine like terms: 0 + 27 = 27
9D + -3d + dD = 27

Add '3d' to each side of the equation.
9D + -3d + 3d + dD = 27 + 3d

Combine like terms: -3d + 3d = 0
9D + 0 + dD = 27 + 3d
9D + dD = 27 + 3d

Reorder the terms:
-27 + 9D + -3d + dD = 27 + 3d + -27 + -3d

Reorder the terms:
-27 + 9D + -3d + dD = 27 + -27 + 3d + -3d

Combine like terms: 27 + -27 = 0
-27 + 9D + -3d + dD = 0 + 3d + -3d
-27 + 9D + -3d + dD = 3d + -3d

Combine like terms: 3d + -3d = 0
-27 + 9D + -3d + dD = 0

The solution to this equation could not be determined.

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