Question

Prosze o szybką odp. :)

Answer 1

{(3x-1)/2  - (6-y)/4=-1      /·8

{(x+2y)/3 +(3y+1)/5=y       /·15

 

{4(3x-1) -2(6-y) =-8

{5(x+2y) +3(3y+1) =15y

 

{12x-4-12+2y =-8

{5x+10y+9y+3=15y

 

{12x+2y=-8+16

{5x+4y=-3

 

{12x+2y =8  /:2

{5x+4y=-3

 

{6x+y=4

{5x+4y=-3

 

{y=4-6x

{5x+4(4-6x) =-3

 

{y=4-6x

{5x+16-24x =-3

 

{y=4-6x

{-19x=-19  /;(-19)

 

{x=1

{y=4-6·1 =4-6=-2

 

{x=1

{y=-2