Question

solve this by using elimination method ​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

:. (-3,5) is the solution of the given simultaneous equation.

Step-by-step explanation:

[x+2y =7]×2

:. 2x+4y=14 _____(1)

2x-3y=-21 _____(2)

[Subtracting eq (1) from equation (2)]

2x -3y = -21

-

2x + 4y = 14

- - -

__________

0 - 7y = - 35

:. y = -35/-7

:. y= 5

[Substituting y=5 in eq (1)]

2x+4y=14

2x+4(5) = 14

2x+20=14

2x=14-20

2x=-6

×=-6/2

:. x=-3

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