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Cross-Multiplication Method of Finding Solution of a Pair of Linear Equations

Solve the fol...

Question

Solve the following systems of equations:

$21 x + 47 y = 110$

$47 x + 21 y = 162$

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Solution

$x = 3, y = 1$

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Q. 21x + 47y = 110
47x + 21y = 162

Q. 21x+47y=110
47x+21y=162.

When I solving

Q. Solve the pair of equations :

21 x + 47 y = 110

47 x + 21 y = 162

Q. Solve each of the following systems of equations by the method of cross-multiplication :

\frac{57}{x + y} + \frac{6}{x - y} = 5 \frac{38}{x + y} + \frac{21}{x - y} = 9

Solve the following pairs of linear equations by elimination method:

47 x + 31 y = 63

31 x + 47 y = 15

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Cross-Multiplication Method of Finding Solution of a Pair of Linear Equations

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