Question

calculeaza a) 89×8-(324-54×3)-42×5-3= b)35×10+2×3×18-(23×2+7)
c) 13+12×7)×9+30-62÷2+56×3​

Answer 1

Răspuns:

a) 89x8-(324-54x3)-42x5-3=

   89x8-(324-162)-42x5-3=

   89x8-162-42x5-3=

   712-162-210-3=

   550-210-3=

   340-3= 337

b) 35x10+2x3x18-(23x2+7)=

   35x10+2x3x18-(46+7)=

   35x10+2x3x18-53=

   350+6x18-53=

   350+108-53=

   458-53= 405

c) (13+12x7)x9+30-62:2+56x3=

   (13+84)x9+30-62:2+56x3=

   97x9+30-62:2+56x3=

   873+30-31+56x3=

   903-31+168=

   872+168= 1.040

Explicație pas cu pas: