Question

(iv) 11x +15y + 23=0, 7x – 2y - 20 = 0​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

11x+15y+23=0 ........(1)

7x- 2y -20=0...........(2)

from equation for 2 we find

x=(2y+20)/7

which put on equation 1 we get

11(2y+20)/7+15y+23=0

22y+220+105y+161=0

127y= -381

y= -3 ..........(3)

putting the value of y in equation (1)we get

11x+(-45)+23=0

11x=22

x=2........(4)

from equation 2 and 3 we get

x=2

y= -3