Question

(i) x + 2y + 1 = 0, 2x - 3y - 12 = 0​

Answer 1

Answer:

(3, -2)

Explanation:

x+2y+1=0

Multiply by 2,

2x+4y= -2_____(1)

2x-3y=12______(2)

Subtract (1) from (2)

7y= -14

y = -2

Substitute y = -2 in (1)

2x-8= -2

2x= -2 + 8

2x= 6

x=3

Therefore, (x,y) = (3, -2)

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