Question

4. x + 2y + 1 = 0
2x – 3y - 12 = 0​

Answer 1

Answer:

X=3.and y=-2

Step-by-step explanation:

x+2y+1=0

=>2x+4y=-2.......(i)

2x-3y=12..........(ii)

Applying elimination method

2x+4y=-2.

2x-3y=12

(-). (-). (-)

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

7y=-14

y=-2

Now, putting this value y=-2 in equation(ii) ,we get,,

x=(12+(-6))/2

=3

x=3

Hope this help you......

Answer 2

Step-by-step explanation:

(2)x +2y + 1 =0

2x -3y -12 = 0

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2x + 4y + 2= 0. equation 1

2x. - 3y - 12 =0 equation 2

(-) (+) (+) ( sign change)

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7y + 14= 0

y = -14 /7 = -2

putting value of y in equation 1.

x +2y +1 =0

x + 2*(-2) +1 = 0

x + (-4) +1 =0

x -4 +1 =0

x = 3

thank u! :-)

hope it helps.. :-)