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2x-3x=6
y = 2x +2
-x = 6
y = 2x +2
x = -6
y = 2(-6) +2
x = -6
y = -12 +2 = -10
x = -6
y = -10
x = -6
2x-3x=6
czy tu w 2 równaniu nie powinno być: 2y lub 3y?
2x-3(2x+2)=6
2x-6x-6=6
-4x=6+6
-4x=12
x=12:-4
x=-3
y=2×-3+2=-4
lub
2(2x+2)-3x=6
4x+4-3x=6
x=6-4
x=2
y=2×2+2=6
lub :
2x-3x=6
-x=6
x=-6
y=2×-6+2
y=-12+2
y=-10