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For simultaneous equations in x and y, if D_x=39,D_y=26 and D =13, then what is the value of X ?

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NAVNEET PUBLICATION-LINEAR EQUATIONS IN TWO VARIABLES-EXERCISE
  1. Choose the correct alternative from those given below each question: ...

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  8. Choose the correct alternative from those given below each question: ...

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  9. Write one solution of the equation 2x-y+1=0.

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  10. Write one solution of the equation x+3y=11

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  11. Find the value of x, if 4x+3y=23 and y=5

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  12. Find the value of x, if 3x+y=15 and y=4

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  13. Find the value of x, if 2x+y=7 and y=-3

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  14. Find the value of(x+y) if 15x+17y=21,17x+15y=11.

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  15. Find the value of (x+y) ,if 3x+5y=9,5x+3y=7

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  16. Find the value of (x+y),if 5x-2y=10,x+8y=26

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  17. Find the value of (x-y) , if 5x+4y=14,4x+5y=13

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  18. Find the value of (x-y) , if 3x+4y=11,4x+3y=10

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  19. Find the value of (x-y), if 2x-5y=5,5x-8y=14

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  20. Find the value of the determinant [[5,0],[0,4]]

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