Question

1.

{2x+3y=15

{3(x-2)-(4-y)=2

2.

{1/2x-1/3y=-1

{x+1/6y=3

Answer 1

1 , 2x+2y = 15 / :2 1x +1 y = 7,5 3x-6-12+3y=2 3x+3y-18=2/:3 1x+1y-6=2/3 / -6 1x+ 1y = -5 1/3 2, {x+1/6y=3 / :1/6 6x+y=3/6 / :6 x + y = 3/6