Meine Lösung:
(1) a+b+c+d+e=1 5a+10=1 a=-1.8 ; ...
(2) a+b+c+d+f=2 (2)-(1) f-e=1 f=a+5
(3) a+b+c+e+f=3 (3)-(2) e-d=1 e=a+4
(4) a+b+d+e+f=4 (4)-(3) d-c=1 d=a+3
(5) a+c+d+e+f=5 (5)-(4) c-b=1 c=a+2
(6) b+c+d+e+f=6 (6)-(5) b-a=1 b=a+1
^^^^ von unten nach oben
-1.8; -0.8; 0.2; 1.2; 2.2; 3.2
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-1.8 - 0.8+ 0.2+ 1.2+ 2.2 = 1
-1.8 - 0.8+ 0.2+ 1.2+ 3.2 = 2
-1.8 - 0.8+ 0.2+ 2.2+ 3.2 = 3
-1.8 - 0.8+ 1.2+ 2.2 +3.2 = 4
-1.8 + 0.2+ 1.2+ 2.2 +3.2= 5
-0.8+ 0.2+ 1.2+ 2.2 +3.2 = 6