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[15-(2*3:6+9)]:5+[(3*8*2:4)-(2*2*3)]

Răspuns :

(15 -10):5+12-12
5:5 +0 = 1
[15-(6:6+9)]:5+[(24*2:4)-(4*3)]
[15-(1+9)]:5+[12-12]
[15-10]:5+0
5:5=1