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½ z - z = - 1 - 6
- ½ z = - 7 /:(- ½)
z = 14
Spr.
½ z ⁺ 6 = z - 1
L = ½ * 14 ⁺ 6 = 7 + 6 = 13
P = 14 - 1 = 13
L = P
-1/2z=-7/:(-1/2)
z=-7*(-2/1)
z=14
-1/2z=-7/:(-1/2)
z=-7*(-2/1)
z=14
sprawdzenie
1/2z +6=z-1
1/2*14+6=14-1
13=13
proszę o naj :)