The value of the expression a - b + c + d will be 7.
What is the matrix?
A matrix is a specific arrangement of items, particularly numbers. A matrix is a row-and-column mathematical structure. The a_{ij} element in a matrix, such as M, refers to the i-th row and j-th column element.
The system of equations are given below.
5x + 7y = 7
3x - 2y = 9
Then the equations can be written in the form of matrix. Then we have
[tex]\begin{bmatrix}5 & 7 \\3 & -2 \\\end{bmatrix} \begin{bmatrix}x \\y \\\end{bmatrix} = \begin{bmatrix}7 \\9 \\\end{bmatrix}[/tex]
Then the value of a, b, c, and d will be
a = 5, b = 3, c = 7, and d = -2
Then the value of the expression will be
a - b + c + d = 5 - 3 + 7 - 2
a - b + c + d = 12 - 5
a - b + c + d = 7
More about the matrix link is given below.
https://brainly.com/question/9967572
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