Please solve this step wise
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Step-by-step explanation:
By determinant formula
| 1 y | = 12
| 4. x |
= (1× x) - (y × 4) = 12
= x.- 4y = 12
= x - y = 12/ 4
= x - y = 3 ...... (1)
|-1. 2| = 6
|y. x |
=(-1 × x) - (2× y) = 6
= -x - 2y = 6
= -x-y = 6/2
= -x -y = 3......(2)
By adding eq. (1) and (2)...
=(x-y= 3) + (-x-y=3)
= -2y = 6
= -y. = 6/2
= -y. = 3
= y. = -3...... (3)
substitute eq. (3) in eq. (1)
.
.
=x - y = 3
= x -(-3) = 3
= x + 3 = 3
= x = 3-3
= x = 0
therefore the solution of the given equation is (x,y) = (0,-3).
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