Solve Using a Matrix with Cramer’s Rule x+y=7 x-y=5

Math
Represent the system of equations in matrix format.
Find the determinant of .
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These are both valid notations for the determinant of a matrix.
The determinant of a matrix can be found using the formula .
Simplify the determinant.
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Simplify each term.
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Multiply by .
Multiply by .
Subtract from .
Find the determinant of .
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These are both valid notations for the determinant of a matrix.
The determinant of a matrix can be found using the formula .
Simplify the determinant.
Tap for more steps…
Simplify each term.
Tap for more steps…
Multiply by .
Multiply by .
Subtract from .
Find the determinant of .
Tap for more steps…
These are both valid notations for the determinant of a matrix.
The determinant of a matrix can be found using the formula .
Simplify the determinant.
Tap for more steps…
Simplify each term.
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Multiply by .
Multiply by .
Subtract from .
Find the value of by Cramer’s Rule, which states that . In this case, .
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Remove parentheses.
Divide by .
Find the value of by Cramer’s Rule, which states that . In this case, .
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Remove parentheses.
Divide by .
The solution to the system of equations using Cramer’s Rule.
Solve Using a Matrix with Cramer’s Rule x+y=7 x-y=5


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