9x+3xy-21=0

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Solution for 9x+3xy-21=0 equation:


Simplifying
9x + 3xy + -21 = 0

Reorder the terms:
-21 + 9x + 3xy = 0

Solving
-21 + 9x + 3xy = 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 + 9x + 21 + 3xy = 0 + 21

Reorder the terms:
-21 + 21 + 9x + 3xy = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 9x + 3xy = 0 + 21
9x + 3xy = 0 + 21

Combine like terms: 0 + 21 = 21
9x + 3xy = 21

Reorder the terms:
-21 + 9x + 3xy = 21 + -21

Combine like terms: 21 + -21 = 0
-21 + 9x + 3xy = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-7 + 3x + xy) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-7 + 3x + xy)' equal to zero and attempt to solve: Simplifying -7 + 3x + xy = 0 Solving -7 + 3x + xy = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 3x + 7 + xy = 0 + 7 Reorder the terms: -7 + 7 + 3x + xy = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 3x + xy = 0 + 7 3x + xy = 0 + 7 Combine like terms: 0 + 7 = 7 3x + xy = 7 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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