rozwiąż układy równań:
a){x+y:3+y:5=-2 d){x+1:3-y+2:4=2(x+y):5
{2x-y:3-3x:4=3:2 {x-3:4-y-3:3=2y-x
b){2x-1:5+3y-2:4=2 e){7+x-3y:4=2x-x+5:3
{3x+1:5-3y+2:4=0 {10(x-y)-4(1-x):3=y
c){3x-2y:5+5x-3y:3=x+1 f){3(x-y):4+0,25=5x:2-y=19:5
{2x-3y:3+4x-3y:2=y+1 {3x-1:5-y+9:2=-2x
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a) {x+y:3+y:5=-2 /*15
{2x-y:3-3x:4=3:2 /*12
{15x+5y+3y= -30
{24x-4y-9x+18
{15x+8y=-30
{15x-4y=18 /*2
{15x+8y= -30
{30x- 8y= 36
+_________________tu dodajesz i y Ci sie skraca
45x=6 / :45
x= 6:45
a teraz podsawiasz X do ktoregos rownania
15* 6:45 +8y= -30
8y=-32 /8
y= -4
reszta roziwazan w zalacznikach