Question

Stabiliți care dintre următoarele relații sunt adevărate și care sunt false: [530+3•(95-5•15):12]-14•25=29.
[(63+991•7):100+(37•111-56•37)•2]:11=37.
{[(40•20+50•16):200+72:8]:17-1}•[2+7•10-(30-5•6):2]=0

Answer 1

[530+3•(95-5•15):12]-14•25=
[530+3•(95-75):12]-350=
(530+3•20:12)-350=
(530+5)-350=
535-350=185   
[530+3•(95-5•15):12]-14•25=29 fals

[(63+991•7):100+(37•111-56•37)•2]:11=
[(63+6937):100+(4107-2072)•2]:11=
(7000:100+2035•2):11=
(70+4070):11=4140:11=376,(36)
[(63+991•7):100+(37•111-56•37)•2]:11=37 fals

{[(40•20+50•16):200+72:8]:17-1}•[2+7•10-(30-5•6):2]=
{[(800+800):200+9]:17-1}•[2+70-(30-30):2]=
[(1600:200+9):17-1]•(2+70-0)=
[(8+9):17-1]•72=(17:17-1)•72=(1-1)•72=0•72=0
{[(40•20+50•16):200+72:8]:17-1}•[2+7•10-(30-5•6):2]=0 adevarat