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-5+t-7t+3-2t+5t-12 dla t=-2
-5 - 3t -12 + 3 = -14 -3t = -14 - [3*2]= -14 - 6= -20
-5+t-7t+3-2t+5t-12 t=-2
-14-3t=-14 - 3*(-2)=-14+6=-8
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-5 - 3t -12 + 3 = -14 -3t = -14 - [3*2]= -14 - 6= -20
-5+t-7t+3-2t+5t-12 t=-2
-14-3t=-14 - 3*(-2)=-14+6=-8