What is the value of Dx for solve the simultaneous equation 3x+2y=11 and 7x-4y=9 by cramer rule
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3x+2y=11---------(1)
7x-4y=9---------(2)
multiply eqeation 1 by 2
6x+4y=-22-------(3)
add equation 2and3
7x-4y=9
+6x+4y=-22
13x. =-13
put in eqn1.
3+2y=-11
2y=-8
y=-4
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