Solve by Substitution x-y=2 , 2x+9y=-51

Math
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Add to both sides of the equation.
Replace all occurrences of in with .
Simplify .
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Simplify each term.
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Apply the distributive property.
Multiply by .
Add and .
Solve for in the second equation.
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Move all terms not containing to the right side of the equation.
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Subtract from both sides of the equation.
Subtract from .
Divide each term by and simplify.
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Divide each term in by .
Cancel the common factor of .
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Cancel the common factor.
Divide by .
Divide by .
Replace all occurrences of in with .
Simplify.
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Remove parentheses.
Subtract from .
The solution to the system of equations can be represented as a point.
The result can be shown in multiple forms.
Point Form:
Equation Form:
Solve by Substitution x-y=2 , 2x+9y=-51

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