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e) y = 2t - 3x
3x=2t-y
x=(2t-y):3
f) y = 2(x-1) *½
½y=x-1
x=½y+1
g) y = x-1
--------
2
2y=2x-2
2x=2y+2
x=y+1
h) y = 2
--------
x-1
y(x-1)=2(x-1)
xy-y=2x-2
xy-2x=y-2
x(y-2)=y-2 /:y-2
x=1
d) T = 1
-------- /*abx
abx
Tabx=abx
Tabx-abx=0
x(Tab-ab)=0 /:(Tab-ab)
x=0; sprzeczne