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B) 3x-12-2y+4=4x-4y+4
A) 4x-3y-x-y=-3-3-8
B) 3x-2y-4x+4y=4+12-4
A) 3x-4y=-14
B) -1x +2y=12 wyznaczam x z B x=2y-12 i wstawiam do A
3(2y-12) - 4y = -14
6y-36 - 4y = -14
2y=-14+36
2y=22 y=11
x=2*11-12=22-12=10
x=10 y=11
4(x+2)-3(y-1)=x+y-3
3(x-4)-2(y-2)=4(x-y)+4
4x+8-3y+4=x+y-3
3x-12-2y+4=4x-4y+4
3x-4y=-16
-x+2y=12 /*2
-3x-4y=-16
-2x+4y=24
-5x=8 /:-5
x=-1,6
3*(-1,6)-4y=-16
11,2=4y /:4
y=2,8
x=-1,6
3(x-4)-2(y-2)= 4(x-y)+4
4x+8-3y+3=x+y-3
3x-12-2y+4=4x-4y+4
3x-4y=-14
-x+2y=12
3x-4y=-14
-2x+4y=24
x=10
-10+2y=12
2y=22
y=11
y=11
x=10