Question

x+y+z=6, x-y+z=2,x+2y-z=2​

Answer 1

Answer:x+y+z=6----------(1)

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

x+2y-z=2-------------(3)

add equation 1 and 3

x+y+z=6

x+2y-z=2

_________

2x+3y=8--------(4) with the help of elimination method

Again add equation 2 and 3

x-y+z=2

x+2y-z=2

_________

2x+y=4-------(5)

Substracting equation 4 and 5

x+3y=8

x+y=4

_______

2y=4

y= 2

Put these value from eq.(5)

x+y=4

x+2=4

x=2

Put x and y value from eq.(1)

x+y+z=6

2+2+z=6

z=2

Step-by-step explanation: