Question

Calculeaza 3xa-b:3+3xc , stiind ca: a=(4+5:5-3):2 ; b=11-6:(5-4:(7-5:1)) ; c=((8+8):4-3)x(9-3x3) prima paranteza este patrata si urmatoarea rotunda.

Answer 1

3×a-b:3+3×c=?

a=(4+5:5-3):2=(4+1-3):2=(5-3):2=2:2=1

b=11-6:[5-4:(7-5:1)]=11-6:[5-4:(7-5)]=11-6:(5-4:2)=11-6:(5-2)=11-6:3=11-2=9

c=[(8+8):4-3]×(9-3×3)=(16:4-3)×(9-9)=(4-3)×0=1×0=0

Rezolvarea exercițiiului:

3×1-9:3+3×0=3-3+0=0+0=0