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

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

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NAVNEET PUBLICATION-LINEAR EQUATIONS IN TWO VARIABLES-EXERCISE
  1. Find the value of x, if 4x+3y=23 and y=5

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

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

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

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

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

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

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

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

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

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

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  12. For certain simultaneous equations in x and y, if Dx =2 and D=4 ,DY=...

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  13. For certain simultaneous equations in x and y, if Dx =18 and D=-3,DY...

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  14. Express the following information in mathematical form using variables...

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  15. Express the following information in mathematical form using variables...

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  16. Express the following information in mathematical form using variables...

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  17. Express the following information in mathematical form using variables...

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  18. Decide whether (0,2) is the solution of the equation 5x+3y=6 or not.

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  19. If Dx =24 ,x=-3, find the value of D.

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  20. Write the equation a/4+b/3=4 in the standard form.

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