Question

(3) x + 2y = -1 ; 2x - 3y = 12​

Answer 1

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x=-27/5,y=38/5

Answer 2

Step-by-step explanation:

x+2y=-1 _(1)

2x-3y=12 _(2)

from equation (1)

x+2y=-1

x= -1-2y _(3)

put the value of x in equation (2)

2x-3y=12

2(-1-2y) -3y=12

-2-4y-3y=12

-7y=12+2

-7y=14

-y=2

y=-2 _ (4)

put the value of y in equation (1)

x+2y=-1

x+2×-2=-1

x-4=-1

x= -1+4

x=3

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