\(\left(545-x:2\right):25=17\)

\(545-x:2=425\)

\(x:2=120\)

\(x=120\times2\)

\(x=240\)

25+52+56+545=678

ủng hộ tớ nhé 

  25 + 52 + 56 + 545

= 77 + 56 + 545

= 133 + 545

= 678

Dress : 678

Answer : 678

số đó là

678

ai muốn k thì k cho mình đã

`(545 -x:2xx5):25 =17`

`545 -x:2xx5=17xx25`

`545-x:2xx5=425`

`x:2xx5=545-425`

`x:2xx5=120`

`x:2=120:5`

`x:2=25`

`x=25xx2`

`x=50`

bạn tính sai r

4 1 2  của  2 5  kg là

4 1 2 . 2 5 = 9 2 . 2 5 = 9 5 ( k g )

a ) 1 3 b ) 1 4 c ) − 1 3

d ) 1 2 e ) 1 4 f ) 3 5

g ) 2 3 h ) − 3 2

1+3212=3213

5676-27=5649

2156+2589=4745

545-25=520

585-478=7

1 + 3212 = 3213

5676 - 27 = 5649

2156 + 2589 = 4745

545 - 25 = 520

585 - 478 = 107

\(1+3212=3213\)

\(5676-27=5649\)

\(2156+2589=4745\)

\(545-25=520\)

\(585-478=107\)

(111:x+25):14=2

=> 111:x+25=2.14

=> 111:x+25=28

=> 111:x=28-25

=> 111:x=3

=> x=111:3

=> x=37

[(6x-39):3].28=5628

=> (6x-39):3=5628:28

=> (6x-39):3=201

=> 6x-39=201.3

=> 6x-39=603

=> 6x=603+39

=> 6x=642

=> x=642:6

=> x=107

400-[545-(45+x)]=0

=> 545-(45+x)=400-0

=> 545-45-x=400

=> 500-x=400

=> x=500-400

=> x=100

(111:x+25):14=2 

  111 : x + 25 = 2 . 14 = 28

    111 : x       = 28 - 25 = 3

        x           = 111 : 3 

             x      = 37

[(6x-39):3] .28=5628

 ( 6x - 39 ) : 3 = 5628 : 28 = 201

     6x - 39      = 201 . 3 = 603

       6x          =  603 + 39 = 642

         x           = 642 : 6

           x         = 107

400-[545-(45+x)]=0

545 - ( 45 + x )=400

 45 + x         = 545 - 400 = 145

    x              = 145 - 45

x                  = 100

[ 545 - ( 45 + 4 . 25) ] : 50 - 2000 : 250  +  ₂15 : ₂13

= [ 545 - ( 45 + 100 ) ] : 50 - 8 + ₂2

= ( 545 - 145 ) : 50 - 8 + 4

= 400 : 50 - 8 + 4

= 8 - 8 + 4

= 0 + 4

= 4

a) 315 + 2x = x+115

<=> 2x-x = 115-315

<=> x = -200

Vậy x= -200

b) 25-(30-x)=25-(-12+125)

<=> 25-30+x = -88

<=> -5 + x =-88

<=> x = -83

Vậy x=-83

c) 412-(40-2x) = 72+x

<=> 412-40+2x=72+x

<=> 372 + 2x = 72+x

<=> 2x-x = 72-372

<=> x= -300

Vậy x=-300