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Find the value of y in the equation 2x+...

Find the value of y in the equation
`2x+y=7`, if `x=2`. Find `x` if `y =-1`.

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NAVNEET PUBLICATION-LINEAR EQUATIONS IN TWO VARIABLES-EXERCISE
  1. Express the following information in mathematical form using variables...

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

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  3. Find the value of y in the equation 2x+y=7, if x=2. Find x if y =-1.

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  4. Solve the simultaneous equations 4x+3y=11,3x+4y=10

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  5. If |[[4,5],[m,3]]|=22 then find the value of m.

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  6. Find the values of Dx and Dy to solve the simultaneous equations 3x-4...

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  7. Find the value of K, if kx+3y=k-3 and 12 x +ky=k represent coincidents...

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  8. Solve the simultaneous equations 101x+99y=501, 99 x+101y=499

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  9. Complete the following activity to find the value of determinant:

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  10. If (2,-5) is the solution of the equation2x-ky=14, then find the value...

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  11. Complete the following table to draw the graph of the equation x-y=1:

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  12. Two numbers differ by 3. The sum of the greater number and twice the s...

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  13. The sum of two numbers is 7 and their difference is 5. Find the number...

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  14. Solve the following simultaneous equations using graphical methd: x+...

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  15. Solve the following simultaneous equations using graphical methd: x+...

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  16. Solve the following simultaneous equations using graphical methd: x+...

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  17. Solve the following simultaneous equations using cramer's rule: 3x-y=...

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  18. Solve the following simultaneous equations using Cramer's rule: 4x+3y=...

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  19. The monthly incomes of Amit and Atul are in the ratio 6:5. The ratio o...

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  20. The monthly incomes of Amit and Atul are in the ratio 6:5. The ratio o...

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