imanuelrui75
imanuelrui75 imanuelrui75
  • 22-07-2021
  • Mathematics
contestada

2x + 3y = 5 2x + 7y = 9

please do this. for me​

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Ujjwal11
Ujjwal11 Ujjwal11
  • 22-07-2021

Now,

2x + 3y = 5

x = (5 - 3y)/2 ------ 1.

2x + 7y = 9

x = (9 - 7y)/2 -------2.

Combining eq. 1 and eq. 2

(5 - 3y)/2 = (9 - 7y)/2

or, 2 (5 - 3y) = 2 (9 - 7y)

or, 10 - 6y = 18 - 14y

or, 14y - 6y = 18 - 10

or, 8y = 8

β—† y = 1

putting the value of y in eq. 1,

x = (5 - 3y)/2

= (5 - 3*1)/2

= 2/2

β—† x = 1

I hope you understand...

This is a Right answer...

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