Question

If the following system of equations was written as a matrix equation in the form AX=C, and matrix A was expressed in the form
A= [ac] ,find the value of a-b+c+d.
bd

4x+2y=7
5x-6y=9

Answer 1

ok you have to build the matrix A

Answer 2

So [42 ], right?
5-6

Answer 3

yep :)

Answer 4

next, you can do the operations like in the question
by taking the appropriate numbers

Answer 5

4-5+2+(-6)?

Answer 6

-5

Answer 7

correct :)