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25-{54:[(24-18:3):2]+54:9x3}
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Răspuns :

25-{54:[(24-18:3):2]+54:9x3}
25-{54:[(24-6):2]+54:9x3}
25-[54:(18:2)+54:9x3]
25-(54:9+54:9x3)
25-(6+6x3)
25-(6+18)=
25-24=
1
25-{54:[(24-18:3):2]+54:9×3}=
25-{54:[(24-6):2]+54:9×3}=
25-{54:[18:2]+54:9×3}=
25-[54:9+54:9×3]=
25-[6+6×3]=
25-(6+18)=
25-24=1