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Solve the following system of equatio...

Solve the following system of equations by method of cross-multiplication: `(57)/(x+y)+6/(x-y)=5,\ \ \ (38)/(x+y)+(21)/(x-y)=9`

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The correct Answer is:
(i) `x =6, y =8 (ii) x= (-1)/(2), y =2 (iii) x =11, y =8 (iv) x =m +n, y =m-n`
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VK GLOBAL PUBLICATION-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES -PROFICIENCY EXERCISE ( SHORT ANSWER QUESTIONS II)
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  2. Find the values of a and b for which the following pair of equations h...

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  3. Given the linear equation 3x - 2y + 7 =0, write another linear equatio...

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  4. If the angles of a triangle are x, y and 40^(@) and the difference bet...

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  5. Draw the graph of the pair of equations x - 2y =4 and 3x + 5y =1. Writ...

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  6. If (x+1) is a factor of 2x^(3)+ax^(2)+2bx+1, then find the value of a ...

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  7. The angles of a cylic quadrilateral ABCD are angle A =(2x +4)^(@), an...

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  8. A two-digit number is 3 more than 4 times the sum of its digits. If 18...

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  9. Solve the following system of equations by method of cross-multipli...

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  10. Find whether for following pairs of equations are consistent or not by...

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  11. The age of the father is twice the sum of the ages of his two children...

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  12. There are some students in the two examination halls A and B. To make ...

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  13. Solve the following system of equation: √2x – √3y = 0 ; √3x − √8...

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  14. The larger of two supplementary angles exceeds thrice the smaller by 2...

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  15. Solve graphically each of the following systems of linear equations. A...

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  16. Solve graphically each of the following systems of inear equations. A...

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  17. IF 3x +5Y = 9 and 5x + 3y =7 then find the value of x+y

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  18. Half the perimeter of a rectangular garden, whose length is 4 m mor...

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  19. Two numbers are in the ratio of 1:3. If 5 is added to both the numbers...

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  20. A's age is seven times B's age. Four years hence, the age of A will be...

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