Solve the following using Cramer's rule
2x + y = 3
x - y = 4
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Answer:2x+y=3. -------(I)
X-y =4. ----------------(ii)
(ii)×2
2×X -2×y=4×2
2x-2y=8 ---------(iii)
(I)-(iii)
2x+y=3
2x-2y=8
-------------------
3y=-5
Y=-5/3
To (I)
2x-5/3=3
2x=3+5/3
2x=14/3
X=7/3
So x=7/3
Y=-5/3...
Step-by-step explanation:
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