Question

x/7+y/3=5 and x/2-y/9=6​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer

Step-by-step explanation:

$\frac{x}{7} + \frac{y}{3} = 5$

$3x + 7y -105 = 0$

$3x + 7y = 105............(1)$

$\frac{x}{2} - \frac{y}{9} = 6$

$9x - 2y - 18 \times 6 = 0$

$9x - 2y - 108 = 0$

$9x - 2y = 108............(2)$

Now solve both equations by substitution method or linear equations :

$3x + 7y = 105........(1)$

$9x - 2y = 108..........(2)$

Multiply in equations (1) by 3

u get the new equation

$9x + 21y = 315............(3)$

Now,solve this equation by substitution method or by linear equation

$9x + 21y = 315$

$9x - 2y = 108$

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$23y = 253$

$y = \frac{253}{23}$

$y= 11$

Now put this values in equation(1)

3x+7(11)=105

3x+77=105

3x=105-77

3x=28

x=28/3

x=7

Answer will be (x, y) =(11,7)