SOLUTION: How do I find the inverse of [5 3] [7 9]? (That's supposed to be a matrix, I didn't know how to make one on here) So far I have gotten the determinan

SOLUTION: How do I find the inverse of [5 3] [7 9]? (That's supposed to be a matrix, I didn't know how to make one on here) So far I have gotten the determinan

Algebra.Com

Question 346215: How do I find the inverse of [5 3]
[7 9]? (That's supposed to be a matrix, I didn't know how to make one on here)
So far I have gotten the determinant of 21 but I don't remember what to do from there.
Thanks

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
[A]=
=det([A])
The inverse of a 2x2 matrix, [A], is given by,
[A]inv=
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