Math, asked by ramya321, 1 year ago

2x+3y=18 ; -7x+9y=15 by cross multiplication method pls.... very aurjent pls......................

Answers

Answered by venkyseela3112
4

hello

here we go

==================================================================

     2x+3y=18

    -7x+9y=15

equation (1)x 7

equation (2)x 2

     14x + 21y = 54

    -14x + 18y = 30

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

              39y = 84

=> y = 84/39

=> y = 2.1 = 2

and

 => 2x + 3(2) = 18

 =>2x + 6 = 18

 =>2x = 12

 => x = 6

hope it helps



ramya321: pls... send in cross multiplication pls......
ramya321: pls.... send in cross multiplication method
Answered by rajupati
1
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