Question

solve x+y=1, y+z=1, z+x=4​

Answer 1

Answer:

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Step-by-step explanation:

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

y+z=1 --------------(2)

z+x=1  -------------(3)

(1) - (2)

x-z=3 ---------------(4)

(3) +(4)

2x=4

x=2

y=2

z= -1

Answer 2

Step-by-step explanation:

• x + y = 1. .............(i)
• y + z = 1 .............(ii)
• x + z = 4 ............(iii)

Now from (i) & (ii)

=> x + y = y + z

=> x = z .

Put this value in equation (iii) ,

=> x + z = 4

=> x + x = 4

=> 2x = 4

=> x = 4/2

=> x = 2 .

Therefore x = z = 2 , y = 1 - x = 1 -2 = (-1)