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CBSE Class 10 Answered

3x-5y-4=0...9x=2y+7
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Asked by laxman44verma | 01 May, 2024, 21:46: PM
answered-by-expert Expert Answer

3x - 5 y = 4  .................... (1)

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

By multiplying eqn.(1) by 3 

9 x - 15 y = 12  ................(3)

By subtracting eqn.(2) from eqn.(3)  we get

-13y = 5  or   y = - 5/13

By substituting y = -5/13 in eqn.(1) , we get

3 x = 4 - (25/13) = 27/13

x = 9/13

-----------------------------

Hene solution to eqn.(1) and (2) is

x = 9/13 ; y = -5/13

 

Answered by Thiyagarajan K | 01 May, 2024, 22:39: PM

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