Question

Rezolvați exercițiile. Va rog urgent dau coroana.Urgent.

Answer 1

Eu o sa le fac cu a,b,c,d,e ca să nu te încurce:
a)52+4×{42:6+8×[42+6×(75-9×8)]}=
=52+4×{7+8×[42+6×(75-72)]}=
=52+4×[7+8×(42+6×3)]=
=52+4×[7+8×(42+18)]=
=52+4×(7+8×60)=
=52+4×(7+480)=
=52+4×487=
=52+1948=
=2000

b)[724:4-19×6+(92-15×6)]:3=
=[181-144+(92-90)]:3=
=(37+2):3=
=39:3=
=13

c){32+4×[8×2:4+15:(3+48:8:3)]}×7=
={32+4×[16:4+15:(3+2)]}×7=
=[32+4×(4+3)]×7=
=(32+4×7)×7=
=(32+28)×7=
=60×7=
=420

d)720×{[(76-9×8)+36×7]-63×4}:5=
=720×{[(76-72)+252]-252}:5=
=720×[(4+252)-252]:5=
=720×(256-252):5=
=720×4:5=
=2880:5=
=576

e)36+{36:9+[36+(36:4+3):3]-36}=
=36+{4+[36+(9+3):3]-36}=
=36+[4+(36+12:3)-36]=
=36+[4+(36+4)-36]=
=36+(4+40-36)=
=36+(44-36)=
=36+8=
=44