a,13

b,16276

c,20

d,20

a) (-17)+5+8+17

=(-17+17)+(5+8)

=0+13

=13

b) (-4)+(-440)6(-6)+440

đề thiếu

c) 465+[58+(-465)+(-38)]

=465+58+(-465)+(-38)

=(-465+465)+(-38+58)

=0+20

=20

d) 465+[58+(-465)+(-38)]

giống bài c

465 +[58 + (-465) + (-38)] = [465 + (-465)] + [58 + (-38)] = 0 + 20 = 20

`a) 465 + [ 58 + ( -465 ) + ( -38 ) ]`

`= 465 + 58 - 465 -38`

`= (465-465) + (58-38)`

`=0+ 20`

`=20`

`b) ( 35 - 17 ) + ( 17 + 20 - 35 )`

`= 35 -17 +17 +20-35`

`= (35-35) + (-17+17)+20`

`= 0 + 0 +20`

`=20`

$a)465+[58+(-465)+(-38)]$

=465+58−465−38$=465+58-465-38$

=(465−465)+(58−38)$=(465-465)+(58-38)$

=0+20$=0+20$

=20$=20$

�)(35−17)+(17+20−35)$b)(35-17)+(17+20-35)$

=35−17+17+20−35$=35-17+17+20-35$

=(35−35)+(−17+17)+20$=(35-35)+(-17+17)+20$

=0+0+20$=0+0+20$

=20$=20$

465+[58+(465+(-38)]

=465+[58+427]

=465+485

=950

=465+[58+465+(-38)]

=465+58+465+(-38)

=(465+465)+[58+(-38)]

=930+20

=950

các bạn cho mk vài li-ke cho tròn 600 với 

\(13\cdot75+25\cdot13-120\)

\(=975+325-120\)

\(=1300-120\)

\(=1180\)

\(190\cdot64+190\cdot36\)

\(=190\left(64+36\right)\)

\(=190\cdot100\)

\(=19000\)

a,13.(75+25)+120=13.100+120=1300+120=1420

b, 190.(64+36)=190.100=19000

c,465+58-465-38=58-38=20

tích nha

a) 29

b) 0