`75/100+3/4xx29+75%xx30+0,75xx40`

`=0,75+0,75xx29+0,75xx30+0,75xx40`

`=0,75xx(1+29+30+40)`

`=0,75xx100`

`=75`

`=>B`

75/100+75%.2+3/4.3+0.75.4

=3/4+3/4.2+3/4.3+3/4.4

=3/4.(1+2+3+4)

=3/4.10

=15/2

=75/100+75/100x2+75/100x3 +75/100 x4

=75/100x(1+2+3+4)

= 75/100x10

=15/2

hok tot

thank you mọi người nha

\(\dfrac{75}{100}\) + 0,75 x 29 + 75% x 30 + \(\dfrac{3}{4}\) x 40

= 0,75 x 1 + 0,75 x 29 + 0,75 x 30 + 0,75 x 40

= 0,75 x (1 + 29 + 30 + 40)

= 0,75 x 100

= 75

19/20x2/100+19/20x2/100

= [19/20+19/20]x2/100

= 38/20x2/100

= 19/500

75/76x102/100-75/76x2/100

= [102/100-2/100]x75/76

= 1x75/76

= 75/76

3x7/10+7/10x5+2x7/10

= [3+5+2]x7/10

= 10x7/10

= 7

giá trị biểu thức 

2/5+2/3x3/4

= 2/5+1/6

= 17/30

1/2x1/3-1/8

= 1/6-1/8

= 1/24

[1/2+1/3]:3/9

= 5/6:3/9

= 5/2

                       nhớ tick cho tớ nhé

rùi đó

75/100 + 3/4 . 29 + 75% . 30 + 0,75 . 40

= 3/4 + 3/4 . 29 + 3/4 . 30 + 3/4 . 40

= 3/4 .(1 + 29 + 30 + 40)

= 3/4 . 100

= 75

Ủng hộ mk nha ^_-

\(=\dfrac{3}{4}\left(1+29+30+40\right)=\dfrac{3}{4}\cdot100=75\)

=75

75

tick cho mik nha

 \(\frac{75}{100}+\frac{3}{4}\times29+75\%\times30+0,75\times40\)

\(=0,75+0,75\times29+0,75\times30+0,75\times40\)

\(=0,75\times(1+29+30+40)\)

\(=0,75\times100\)

\(=75\)

(75 / 100) + ((3 / 4) x 29) + (75% x 30) + (0,75 x 40) =

\(\frac{75}{100}+\frac{3}{4}\cdot29+75\%\cdot30+0.75\cdot40\)

\(=0,75+0,75\cdot29+0,75\cdot30+0,75\cdot40\)

\(=0,75\cdot\left(1+29+30+40\right)\)

\(=0,75\cdot100\)

\(=75\)