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The number by which the equation (x+a)/a...

The number by which the equation `(x+a)/a=(y+b)/b` should be multiplied so that after adding the result of the multiplication to the equation `ax-by=a^(2)-b^(2)` the variable y will be eliminated, is

A

`"-b"`

B

`-b^(2)`

C

`-b/a`

D

`(-b^(2)) " or, " (-b/a)`

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The correct Answer is:
D
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CALCUTTA BOOK HOUSE-LINEAR EQUATIONS-EXERCISE - 4.2
  1. The number, by which the equation 7x-5y+2=0 should be multiplied so th...

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  2. The constant term, by which the equation ax+by=c should be multiplied...

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  3. The number by which the equation (x+a)/a=(y+b)/b should be multiplied ...

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  4. The quantities, by which the equation px+qy=1 " and " qx+py=(a+b)^(2)/...

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  5. If x of the equation x/3+y/2=8 is expressed in term of y we get,

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

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

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

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

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

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

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

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  13. Determine the value of x by substituting y=2/(5x+3) in the equation 2x...

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  14. Find the value of y by substituting x=(by+a^(2)-b^(2))/(a) in the equa...

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

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

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

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

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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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