Question

1.
22+{14•[26+(13•4-19)•2]-37}-3
2.
3•1+3•3+3•5+3•7+3•9+...+3•21
3.
13,4+{5,35+[234,05-(23•1,7-18,5)•10}

Answer 1

1.
22+{14•[26+(52-19)•2]-37}-3=22+[14•(26+33•2)-37]-3=22+[14•(26+66)-37]-3=
=22+(14•92-37)-3=22+(1288-37)-3=22+1251-3=1273=1270
3.
13,4+{5,35+[234,06-(39,1-18,5)•10}=13,4+[5,35+(234,06-20,6•10)]=
=13,4+[5,35+(234,06-206)]=13,4+(5,35+28,06)=13,4+33,41=46,81

Answer 2

3.
13,4 + [ 5,35 + ( 234,05 - 20,6 ) x 10 ].
13,4 + ( 5,35 + 213,45 x 10 )
13,4 + ( 5,35 + 2134,5 )
13,4 + 219,85
233,25..... ...... ....... .......