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8+5×[20+3×(2+4×6)-15]-3

Răspuns :

8+5x[20+3x(2+4x6)-15]-3
=8+5x[20+3x(2+24)-15]-3
=8+5x(20+3x26-15)-3
=8+5x(20+78-15)-3
=8+5x(98-15)-3
=8+5x83-3
=8+415-3
=423-3
=420