Question

Va rog ma poate ajuta cineva cu la cateva exercitii?
{[(7×9-13)6×4]:2+(200-143)×6}=
31×{[(111+333+555):9-28]+3}:2=
{[(12×6-(132:2-72:6)]×3}-4=
14×{[(96:3×16)×(50-50)]×1000}=
{[(455:5)+9]:10+2000-143}+(3×2)=
Va rooooggggg!!!!!
Multumesc!!!!!!!!

Answer 1

a).{[(7×9-13)+6×4]:2+(200-143)×6}= {[(63×13)+6×4]:2+57×6}= [(50+24):2+57×6]= (74:2+342)=(37+342)=279. b).31×{[(111+333+555):9-28]+3}:2= 31×[(999:9-28)+3]:2=31×[(111-28)+3]:2= 31×(83+3):2=31×86:2=2666:2=1333 . c).{[(12×6-(132:2-72:6)]×3}-4= {[(12×6-54)]×3}-4={[(72-54)]×3}-4= [(18×3)]-4=(18×3)-4= 54-4=50. d).14×{[(96:3×16)×(50-50)]×1000= 14×{[(32×16)×0]×1000=0. e).{[(455:5)+9]:10+2000-143}+(3×2)= [(91+9):10+2000-143]+(3×2)= (100:10+2000-143)+6=(10+2000-143)+6= (2010-143)+6=1867+6=1873. SPER CA TI-