Question

solve x and y 11x+15y+23=0 7x-2y-20=0

Answer 1

here is your Answer!

11x +15y +23 =0...........(1)
7x-2y-20 =0................(2)

in eq (1) multiply by 7 & eq (2) multiply by 11

then
77x +105y +161 =0
77x -22y -220 =0

now substract the eq

127y = 381
y = -381/127

y = -3

put the Value of y in eq (1)

11x -45 = -23
11x = -23+45
11x = 22

X = 2 Ans

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Answer 2

HELLO !!!!
Here is ur answer⬇️⬇️
11x+15y = -23 --------(i)
7x-2y = 20 --------(ii)
USING SUBSTITUTION METHOD:
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From equation (i)
11x +15y = -23
x = -23-15y/11-------(iii)
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PUTTING ,x = -23-15y/11 in eq.(ii)
7x -2y = 20
7(-23-15y/11)-2y = 20
-161 - 105 y -22y = 220
-127y = 220+161
-127y = 381
y = 381/-127
y = -3
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PUTTING , y = -3 in eq.(iii)
x = -23-15y/11
x = -23-15(-3)/11
x = -23+45/11
x = 22/11
x = 2
SO,x = 2 & y =-3
THANKS
HOPE IT HELPS U☆☆☆☆