Question

2x+3y-2=9,x+y+z=9,3-y-z=-1

Answer 1

Explanation:

2x+3y-2 =9

2x+3y =9+2

2x+3y =11 ...(i)

x+y+z =9. .....(ii)

3-y-z =-1

y+z=4. .....(iii)

put from (iii) in (ii)

x= 5

put this in (i)

then y=1/3

z= 11/3