1)Metoda podstawiania:
4x+3y=1 /-3y
5x+8y=14
4x=1-3y //4
5x+8y=14
x=0,25-0,75y
5x+8y=14
x=0,25-0,75y
5(0,25-0,75y)+8y=14
x=0,25-0,75y
1,25-3,75y+8y=14y /-1,25
x=0,25-0,75y
4,25y=12,75 //4,25
x=0,25-0,75y
y=3
x=0.25-0,75*3
y=3
x=-2
y=3
2) Met. prz. współczynników:
4x+3y=1 /*(-5)
5x+8y=14 /*4
-20x-15y=-5
20x+32y=56
17y=51 //17
y=3
4x+3y=1 /*(-8)
5x+8y=14 /*3
-32x-24y=-8
15x+24y=42
-17x=34 //(-17)
x=-2
x=-2
y=3
