a) if x=-30, Dy=400 and Da 5 are the walues of the determinants
fox cestain simultaneouns equation in a onday,
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Answer:
Given D
x
=30,D
y
=42 and D=6
now x=
D
D
x
=
6
30
=5y=
D
D
y
=
6
42
=7
∴ The value of x and y is 5 and 7 respectively
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