(X-3)(x+7)=0

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Solution for (X-3)(x+7)=0 equation:


Simplifying
(X + -3)(x + 7) = 0

Reorder the terms:
(-3 + X)(x + 7) = 0

Reorder the terms:
(-3 + X)(7 + x) = 0

Multiply (-3 + X) * (7 + x)
(-3(7 + x) + X(7 + x)) = 0
((7 * -3 + x * -3) + X(7 + x)) = 0
((-21 + -3x) + X(7 + x)) = 0
(-21 + -3x + (7 * X + x * X)) = 0
(-21 + -3x + (7X + xX)) = 0

Reorder the terms:
(-21 + 7X + -3x + xX) = 0
(-21 + 7X + -3x + xX) = 0

Solving
-21 + 7X + -3x + xX = 0

Solving for variable 'X'.

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

Add '21' to each side of the equation.
-21 + 7X + -3x + 21 + xX = 0 + 21

Reorder the terms:
-21 + 21 + 7X + -3x + xX = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 7X + -3x + xX = 0 + 21
7X + -3x + xX = 0 + 21

Combine like terms: 0 + 21 = 21
7X + -3x + xX = 21

Add '3x' to each side of the equation.
7X + -3x + 3x + xX = 21 + 3x

Combine like terms: -3x + 3x = 0
7X + 0 + xX = 21 + 3x
7X + xX = 21 + 3x

Reorder the terms:
-21 + 7X + -3x + xX = 21 + 3x + -21 + -3x

Reorder the terms:
-21 + 7X + -3x + xX = 21 + -21 + 3x + -3x

Combine like terms: 21 + -21 = 0
-21 + 7X + -3x + xX = 0 + 3x + -3x
-21 + 7X + -3x + xX = 3x + -3x

Combine like terms: 3x + -3x = 0
-21 + 7X + -3x + xX = 0

The solution to this equation could not be determined.

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