Given this matrix:What is the formula for finding the inverse of the matrix?

Find the inverse of

a = , b = , c = , d =
4
a = , b = , c = , d =
-10
a = , b = , c = , d =
-7
x = , y = , z =
-7
x = , y = , z =
9
x = , y = , z =
-1
a = , b = , c = , d =
-1
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