a/ \(3636\div\left(12x-91\right)=36\)

                 \(12x-91=3636\div36\)

                 \(12x-91=101\)

                 \(12x=101+91\)

                  \(12x=192\)

                 \(x=192\div12\)

                 \(x=16\)

b/ \(\left(x\div23+45\right)\times67=8911\)

    \(x\div23+45=8911\div67\)

   \(x\div23+45=133\)

  \(x\div23=133+45\)

 \(x\div23=178\)

 \(x=178\times23\)

\(x=4094\)

a. 3636 : (12x - 91) = 36

=> 12x - 91 = 3636 : 36

=> 12x - 91 = 101

=> 12x = 101 + 91

=> 12x = 192

=> x = 192 : 12

=> x = 16

b. (x : 23 + 45). 67 = 8911

=> x : 23 + 45 = 8911 : 67

=> x : 23 + 45 = 133

=> x : 23 = 133 - 45

=> x : 23 = 88

=> x = 88 . 23

=> x = 2024

c. (19x + 2.5²) : 14 = (13 - 8)² - 4

=> (19x + 2.25) : 14 = 5² - 4

=> (19x + 50) : 14 = 25 - 4

=> (19x + 50) : 14 = 21

=> 19x + 50 = 21. 14

=> 19x + 50 = 294

=> 19x = 294 - 50

=> 19x = 244

=> x = 244 : 19

=> x = 244/19 (Xem lại đề)

d. -12 .(x - 5) + 7.(3 - x) = 5

=> -12x + 60 + 21 - 7x = 5

=> -19x + 81 = 5

=> -19x = 5 - 81

=> -19x = -76

=> x = -76 : (-19)

=> x = 4

3636:(12.x-76):4=36

Các bạn giúp với

a) (x + 74) - 318 = 200

x + 74 = 200 + 318

x + 74 = 518

x = 518 - 74

x = 444

b) 3636 : (12x - 91) = 36

12x - 91 = 3636 : 36

12x - 91 = 101

12x = 101 + 91

12x = 192

x = 192 : 12

x = 16

c) (x : 23 + 45) . 67 = 8911

x : 23 + 45 = 8911 : 67

x : 23 + 45 = 133

x : 23 = 133 - 45

x : 23 = 88

x = 88 . 23

x = 2024

a. ( x + 74 ) - 318 = 200

x + 74 = 518

x = 444

a, 444

b. 16

c. 2024

minh lam lun ko ghi lai de

 a, 12x-91=3636:36

12x=101+91

x= 192:12

x=16

b, x:23+45=8911:67

x:23=133-45

x=88.23

x=2024

k mk nha

câu 1:

3636:(12*x-91)= 36

          12*x-91=3636:36

          12*x-91=101

          12*x     =101 + 91

          12*x     =192

               x     =192 : 12

               x     =16

câu 2:

(x:23+45)*67=8911

 x:23+45     =8911 : 67

 x:23+45     =133

x:23           =133 - 45

x:23           = 88

x               = 88*23

x               =2024

Câu 1 bằng: 16

Câu 2 bằng: 2024

a) 3636:(12x-91) =36

12x-91 = 3636:36

12x-91=101

12x=101+91

12x=192

x=192:12

x=16

b) (x : 23+45).67=8911

(x : 23+45)=8911:67

(x : 23+45)=133

x:23=133-45

x:23=88

x=88.23

x=2024

c) 420+65.4 =(x+175):5+30

420+260=(x+175):5+30

680=(x+175):5+30

(x+175):5=680-30

(x+175):5=650

(x+175)=650x5

(x+175)=3250

x=3250-175

x=3075

d) (32.15):2=(x+70):14-10

480:2=(x+70):14-10

240=(x+70):14-10

(x+70):14=240+10

(x+70):14=250

(x+70)=250.14

(x+70)=3500

x=3500-70

x=3430

e)x-4867=(175.2-50.70):25+23

x-4867=(350-3500):25+23

x-4867=-3150:25+23

x-4867=-126+23

x-4867=-103

x=-103+4867

x=4764

\(a,\left(x+74\right)-318=200\)

\(\left(x+74\right)=200+318\)

\(\left(x+74\right)=518\)

\(x=518-74\)

\(x=444\)

\(b,3636:\left(12x-91\right)=36\)

\(\left(12x-91\right)=3636:36\)

\(\left(12x-91\right)=101\)

\(12x=101+91\)

\(12x=192\)

\(x=192:12\)

\(x=16\)

\(\left(x:23+45\right).67=8911\)

\(\left(x:23+45\right)=8911:67\)

\(\left(x:23+45\right)=133\)

\(x:23=133-45\)

\(x:23=88\)

\(x=88.23\)

\(x=2024\)

Mk ko ghi lại đề mà làm tiếp luôn nha!

a)  (ĐỀ)

x+74=200+318

x+74=518

x      =518-74

x      =444

b) (ĐỀ)

12x-91=3636:36

12x-91=101

12x     =101+91

12x     = 192

    x     = 192:12

    x     = 16

c)  (ĐỀ)

x:23+45=8911:67

x:23+45= 133

x:23      =133-45

x:23      = 88

x           = 88.23

x           = 2024

K cho  mk nha bn!

a ) (x+74 ) - 218 = 200 \(\Leftrightarrow\) x+74-218 = 200   \(\Leftrightarrow\)   x= 200+218+74   \(\Leftrightarrow\)     x= 492                                                                                                                       vậy x = 492                                                                                                                                                     b, 3636 : ( 12x -91) =36   \(\Leftrightarrow\)12x-91 = 3636: 36  \(\Leftrightarrow\)12x-91 = 101  \(\Leftrightarrow\)    12x = 101+91   \(\Leftrightarrow\) 12x = 192  \(\Leftrightarrow\)  x= 16                                                         vậy x = 16           

 c, ( x : 3   +45 ) . 67 = 8911  \(\Leftrightarrow\)  x : 3 +45 = 8911: 67 \(\Leftrightarrow\)   x : 3 = 133 - 45   \(\Leftrightarrow\)  x : 3 = 88 \(\Leftrightarrow\)   x= 88 . 3  \(\Leftrightarrow\) x=264 

                   vậy x= 264

\(a,\Rightarrow12x-91=101\\ \Rightarrow12x=192\\ \Rightarrow x=16\\ b,\Rightarrow x:23+45=133\\ \Rightarrow x:23=88\\ \Rightarrow x=\dfrac{88}{23}\\ c,\Rightarrow\left(6x-39\right):7=3\\ \Rightarrow6x-39=21\\ \Rightarrow6x=60\\ \Rightarrow x=10\\ d,\Rightarrow3x-24=\dfrac{148}{73}\\ \Rightarrow3x=\dfrac{1900}{73}\\ \Rightarrow x=\dfrac{1900}{219}\\ e,\Rightarrow\left[{}\begin{matrix}x=0\\x=10\end{matrix}\right.\\ f,\Rightarrow\left[{}\begin{matrix}x=-1\\x=2\end{matrix}\right.\\ d,\left(9-x\right)^3=64=4^3\\ \Rightarrow9-x=4\\ \Rightarrow x=5\\ h,\Rightarrow x=27\\ i,\Rightarrow6x=312\cdot12=624\cdot6\\ \Rightarrow x=624\\ j,\Rightarrow\left(19x+104\right):14=25-42=-17\\ \Rightarrow19x+104=-238\\ \Rightarrow19x=-342\\ \Rightarrow x=-18\)