Question

if 2√3-√5/4√3-3√5=x-√15y. Find the value of x and y.​

Answer 1

Step-by-step explanation:

The given equations are,

15x+17y=21 ------- ( 1 )

17x+15y=11 ------- ( 2 )

Multiplying equation ( 1 ) by 17 we get,

⇒ 225x+289y=357 ----- ( 3 )

Multiplying equation ( 2 ) by 15 we get,

⇒ 225x+225y=165 ----- ( 4 )

Now, subtracting equation ( 4 ) by equation ( 3 ) we get,

⇒ 64y=192

∴ y=3

Substituting y=3 in equation ( 1 )

15x+17(3)=21

15x+51=21

15x=−30

∴ x=−2

⇒ (x−y)=−2−3=5

Answer 2

Step-by-step explanation:

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y=3 x= -2

than,( x-y) =-2-3 = -5.