\(y.\left(20+16\right)=972\Leftrightarrow36y=972\Leftrightarrow y=27\)

y x (20+ 16) = 972 

y  x 36 = 972

y = 972 : 36

y = 27

X x 20 - 11 x X = 972

X x ( 20 - 11 ) = 972

X x 9 = 972

X = 972 : 9

X = 108

x.20-11.x=972

=x.(20-11)=972

=x.9=972

=x=972:9

=x=108

Vậy x=108

X x ( 20 - 11 ) = 972

X x 9             = 972

X                   = 972 : 9

X                   = 108

 Tìm x: (3.x + 11) – 17 = 30

a, x - 108 × 42 = 2378

=> x - 4536 = 2378

=> x = 6914

vậy_

b,1337 + 13 × x = 6745

=> 10 × x = 5408

=> x = 540,8

vậy_

c, x × 10 + 16 × x = 972

=> x × (10 + 16) = 972

=> x× 26 = 972

=> x = \(\frac{486}{13}\)

vậy_

d, 25 × x - x  = 59904 : 32

=> x × (25 - 1) = 1872

=> x × 24 = 1872

=> x = 78

vậy_

\(x-108.42=2378\)

\(x-4536=2378\)

\(x=6914\)

mk cần cách giải gấp mấy bạn giúp mk nha

Có ngay nè e

a. X x 36 =972

    X = 972 : 36

    X = 27

b. ( X - 47) x 21 = 840

     X - 47 = 840 : 21

     X - 47 = 40

     X = 40 + 47

      X = 87

c. X x 22 + X x 50 = 504

   X x ( 22 + 50) = 504

   X x       72        = 504'

   X                      = 504 : 72

    X                     =      7

d.254 : x = 14 ( dư 16)

             X = ( 254 - 16) : 14

             X =       238      : 14

               X = 17

e. 729 : X = 81

              X = 729 : 81

              X =     9

f. y x 15 + y x 13 = 560 x 45

   y x 15 + y x 13 =  25 200

  y x ( 15 + 13 )   = 25 200

   y x      28         = 25 200

    y                     = 25 200 : 28

     y                   = 900

Có sai ở đâu thông cảm cho a nhé, Dài quá e ạ

\(\frac{x-971}{972}+\frac{x-973}{970}+\frac{x-975}{968}+\frac{x-977}{966}=\frac{x-972}{971}+\frac{x-970}{973}+\frac{x-968}{975}+\frac{x-966}{977}\)

\(\Rightarrow\frac{x-971}{972}-1+\frac{x-973}{970}-1+\frac{x-975}{968}-1+\frac{x-977}{966}-1=\frac{x-972}{971}-1+\frac{x-970}{973}-1+\frac{x-968}{975}-1+\frac{x-966}{977}-1\)\(\Rightarrow\frac{x-1943}{972}+\frac{x-1943}{970}+\frac{x-1943}{968}+\frac{x-1943}{966}=\frac{x-1943}{971}+\frac{x-1943}{973}+\frac{x-1943}{975}+\frac{x-966}{977}\)

\(\Leftrightarrow\frac{x-1943}{972}+\frac{x-1943}{970}+\frac{x-1943}{968}+\frac{x-1943}{966}-\frac{x-1943}{971}-\frac{x-1943}{973}-\frac{x-1943}{975}-\frac{x-966}{977}=0\)

\(\Leftrightarrow\left(x-1943\right).\left(\frac{1}{972}+\frac{1}{970}+\frac{1}{968}+\frac{1}{966}-\frac{1}{971}-\frac{1}{973}+\frac{1}{975}+\frac{1}{977}\right)=0\)

\(\Leftrightarrow\left(x-1943\right)=0\Leftrightarrow x=1943\)

Vậy...

Hướng dẫn giải:

a.

x x 6 = 972

x = 972 : 6

x = 162

b.

7332 : x = 12

x = 7332 : 12

x = 611

`95,13 xx a + 2,07 xx a = 972`

`=>(95,13 + 2,07)xx a = 972`

`=>97,2xx a = 972`

`=>x=972 : 97,2`

`=>x=10`

\(95,13a+2,07a=972\)

\(\Rightarrow\left(95,13+2,07\right)a=972\)

\(\Rightarrow97,2a=972\)

\(\Rightarrow a=972:97,2=10\)

Vậy \(a=10\)

\(95,13\times a+2,07\times a\text{=}972\)

\(\left(95,13+2,07\right)\times a\text{=}972\)

\(97,2\times a\text{=}972\)

\(a\text{=}972:97,2\)

\(a\text{=}10\)