=17,5 x(1 -3/4 +1/2)

=17,5x(1-0,75+0,5)

=17,5 x 0,75

=13,125

17,5.3/4-17,5.0,25+17,5.1/2

=17,5.(3/4-25/100+1/2)

=17,5.(3/4-1/4+1/2)

=17,5.4/4

=17,5.1

=17,5

a) 3,75x 5,5 + 4,5 x 3,75 

= 3,75 x ( 5,5 + 4,5 )

= 3,75 x 10

= 37,5

b) 17,5 x 9.9 + 17,5 : 10 

= 17,5 x 9.9 + 17,5x 0,1

= 17,5 x ( 9,9  + 0,1 )

= 17,5 x 10

= 175

a) 3,75 x 5,5 + 4,5 x 3,75 

= 3,75 x ( 5,5 + 4,5 )

= 3,75 x 10

= 37,5

b) 17,5 x 9,9 + 17,5 : 10

= 17,5 x 9,9 + 17,5 x 0,1

= 17,5 x ( 9,9 + 0,1 )

= 17,5 x 10

= 175

a: \(17,5\cdot4\cdot3\cdot25\)

\(=17,5\cdot3\cdot\left(4\cdot25\right)\)

\(=52,5\cdot100=5250\)

b: \(25,6\cdot7,5+25,6\cdot2,5\)

\(=25,6\left(7,5+2,5\right)\)

\(=25,6\cdot10=256\)

c: \(4,52\cdot12,5-2,5\cdot4,25\)

\(=2,5\left(4,52\cdot5-4,25\right)\)

\(=2,5\cdot18,35=45,875\)

d: \(7,7\cdot9+7,7\)

\(=7,7\left(9+1\right)\)

\(=7,7\cdot10=77\)

=3/5 * ( 17/2 + 1/2 )

=3/5 * 9

=27/5

`(2/3xx4/5)xx5/6`

`=2/3xx4/5xx5/6`

`=2/3xx4/6`

`=2/3xx2/3`

`=1`

__

`(4/5+5/4)xx3/4`

`=(16/20+25/20)xx3/4`

`=41/20xx3/4`

`=123/80`

__

`27/12+17/6-25/36-15/6`

`=(27/12-25/36)+(17/6-15/6)`

`=(81/36-25/36)+2/6`

`=56/36+2/6`

`=56/36+12/36`

`=68/36`

`=17/9`

đang cần bài trước 7h15 tối ngày 9/12/2021 

Tôi hứa sẽ tik

tôi hứa đó

5,5 + \(\dfrac{3}{4}\) - 5 + \(\dfrac{1}{4}\)

(5,5 - 5) + (\(\dfrac{3}{4}\) + \(\dfrac{1}{4}\))

= 0,5  + 1

= 1,5 

\(\dfrac{5}{2}\) x  \(\dfrac{2}{3}\) + \(\dfrac{1}{4}\) : \(\dfrac{3}{2}\)

= \(\dfrac{5}{2}\) x \(\dfrac{2}{3}\) + \(\dfrac{1}{4}\) x \(\dfrac{2}{3}\)

=  (\(\dfrac{5}{2}\) + \(\dfrac{1}{4}\)) x \(\dfrac{2}{3}\)

= (\(\dfrac{10}{4}\) + \(\dfrac{1}{4}\)) x \(\dfrac{2}{3}\)

= \(\dfrac{11}{4}\) x \(\dfrac{2}{3}\)

= \(\dfrac{11}{6}\) 

Tính \(x\): 

  435  - [\(x\) + 16] = 425 : 17

  435 - [\(x\) + 16] = 25

          [\(x\) + 16] = 435 - 25

           \(x\) + 16 = 410

           \(x\)        = 410 - 16

          \(x\)         = 394