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If r(x+y)=2rs………(1) and s(x-y)=2rs………(2)...

If r(x+y)=2rs………(1) and s(x-y)=2rs………(2) be two equations, then the value of x obtained from (1) that should be substituted in equation (2) so as to determine the value of y is -

A

s-r

B

y-2r

C

2r-y

D

2r+y

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The correct Answer is:
A
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CALCUTTA BOOK HOUSE-LINEAR EQUATIONS-EXERCISE - 4.2
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  8. If x of the equation x/3+y/2=8 is expressed in term of y we get,

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  9. Solve the simultaneous linear equation in two variables px+qy+r=0 and ...

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  10. Find the quantity by which the the equation (a+b)(x+y)=a^(2)+b^(2) sho...

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  11. Eliminate t: x=at^(2), y=2at

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  12. Prove that x+y=5 when 101x+99y=499 and 99x+101y=501.

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  13. Express y of the equation (xy)/(x-y)=8 in term of x.

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  14. If y=(ax+b)/(cx+d), then express x in term of y.

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  15. Determine the value of y by eliminating x from the simultaneous linear...

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  18. Find the value of y if x=y/(1-9y) " and " x=(-y)/(1-5y).

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  19. Solve the following simultaneous linear equations in two variables by ...

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  20. Solve the following simultaneous linear equations in two variables by ...

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