Solve [[4,5],[7,9]]x=[[3,-1],[4,3]]

Math
Find the inverse matrix of .
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The inverse of a matrix can be found using the formula where is the determinant of .
If then
The determinant of is .
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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 .
Substitute the known values into the formula for the inverse of a matrix.
Simplify each element of the matrix .
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Rearrange .
Rearrange .
Multiply by each element of the matrix.
Simplify each element of the matrix .
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Rearrange .
Rearrange .
Rearrange .
Rearrange .
Assuming that is the matrix to solve for, multiply the inverse matrix by both sides of the equation .
Simplify the left side of the equation.
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Multiply each row in the first matrix by each column in the second matrix .
Simplify each element of the matrix by multiplying out all the expressions.
Multiplying the identity matrix by any matrix is matrix .
Simplify the right side of the equation.
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Multiply each row in the first matrix by each column in the second matrix .
Simplify each element of the matrix by multiplying out all the expressions.
is in the most simplified form.
Solve [[4,5],[7,9]]x=[[3,-1],[4,3]]


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