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406-4×[3×(30-18÷6÷3)]


Răspuns :

406-4x[3x(30-18:6:3)]=
=406-4x[3x(30-1)]=
=406-4x(3x29)=
=406-4x87=
=406-348=58
406-4 x[3 x(30-18:6:3)]=>406-4x[3x(30-1)]=>406-4x(3x29)=>406-4x87=>406-348=58 .