x + 19 =1476

x = 1476 - 19 

x = 1457

x - 1223 =432 

x = 432 + 1223

x = 1655

k mình nha

\(x+19=123x12\)

\(x+19=1476\)

\(x=1476-19=1457\)

X=1476-19=1457                 X= 1655

x + 120 = (1223 + 1323) :2

x + 120 = 2546 : 2

x + 120 = 1273

x = 1273 - 120

x = 1153

x * 2 + 233 = 231132

x * 2 = 231132 - 233

x * 2 = 230899

x = 233899 : 2

x = 115449,5

* x+23=56

     x   =56-23

     x   =33

* x+1223=45

x           =45-1223

x           =-1178

x + 23 = 56

\(\Leftrightarrow\)x = 56 - 23 = 33

x + 1223 = 45

\(\Leftrightarrow\)x = 45 - 1223 = -1178

x1=33

x2=-1178

a. 16 569 330

    24 425 739

b. 14 711 334

    24 935 708

c. 23 222 460

   28 495 512

d. 12 585 992

    13 837 260

a.4674 x 3545

   4563 x 5353

  b.4521 x 3254 = 14711334

 .4387 x 5684 = 24958869

   c.4436 x 5235 = 23222460

   5242 x 5436 = 28495512

d.3646 x 3452 = 12585992

  3252 x 4255 = 13837260

Học tốt

a 4674x3545=16569330

4563x5353=244258739

b 4521x3254=14711334

4387x5684=24935708

c 4436x5235=23666060

5242x5436=28495512

d 3646x 3452=12585992

3252x4255=13837260

~hok tốt ~

1223-1223=0

Tk mk nha

1223 - 1223 = 0 .

Chúc bạn học tốt !

1223 -1223=0

`@` `\text {Ans}`

`\downarrow`

\(\dfrac{5}{9}\times121\times\dfrac{3}{55}\)

`=`\(\dfrac{605}{9}\times\dfrac{3}{55}=\dfrac{11}{3}\)

5/9 x 121 x 3/55

= 605/9 x 3/55

= 11/3.

 \(\dfrac{5}{9}\)  \(\times\) 121\(\times\) \(\dfrac{3}{55}\)  = \(\dfrac{5\times11\times11\times3}{3\times3\times5\times11}\) = \(\dfrac{11}{3}\) 

\(\dfrac{22}{5}\times\dfrac{6}{121}\times\dfrac{11}{4}\times\dfrac{3}{5}\times\dfrac{1}{3}\times\dfrac{5}{4}\)

\(=\left(\dfrac{22}{5}\times\dfrac{5}{4}\right)\times\left(\dfrac{6}{121}\times\dfrac{11}{4}\right)\times\left(\dfrac{3}{5}\times\dfrac{1}{3}\right)\)

\(=\dfrac{11}{2}\times\dfrac{3}{22}\times\dfrac{1}{5}\)

\(=\dfrac{3}{20}\)

\(=\dfrac{22\times6\times11\times3\times1\times5}{5\times121\times4\times5\times3\times4}=\dfrac{11\times2\times6\times11\times1}{11\times11\times4\times5\times4}=\dfrac{2\times6\times1}{4\times5\times4}=\dfrac{18}{100}=\dfrac{9}{50}\)

5345+3545=8890

5345+3545=8890

5345+3545=8890

chịu cái đề bài này

Bạn phải ghi rõ ra chứ nếu ko thì làm thế éo nào dc