∅ Rezolvare :
100 - 24 - x : 4 = 81 : 9 + 59 =>
100 - 24 - x : 4 = 9 + 59 =>
100 - 24 - x : 4 = 68 =>
x : 4 = 100 - 24 - 68 =>
x : 4 = 76 - 68 =>
x : 4 = 8 =>
x = 8 • 4 =>
x = 32
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100 - 24 - 32 : 4 = 81 : 9 + 59 =>
100 - 24 - 8 = 9 + 59 =>
76 - 8 = 68 =>
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68 = 68
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