c) { 2 (2x-y)+3 (x+3y)= 42 { 5 (x+3y)-8 (2x-y)= -32 d) { y/2+ x/4- 1/5 (x+2)= 1,1 { x-2y+4= x/2 + 3/4 (y-0,5) Proszę pomóżcie z tymi równaniami...;]

c) { 2 (2x-y)+3 (x+3y)= 42 { 5 (x+3y)-8 (2x-y)= -32 4x-2y+3x+9y=42 5x+15y-16x+8y=-32 7x+7y=42 -11x+23y=-32 7y=42-7x /7 -11x+23y=-32 y=6-x -11x+23(6-x)=-32 y=6-x -11x+138-23x=-32 -138 y=6-x -34x=-170 /(-34) y=6-x x=5 y=6-5=1 x=5