75 ÷ (x -18) = 5^2

=> x - 18 = 75 ÷ 25 = 3

=> x = 3 + 18 = 21

75 : (x - 18) = 5²

x - 18 = 75 : 5²

x - 18 = 75 : 25

x - 18 = 3

x = 3 + 18

x = 21

(-52)+52.(-25).75

= 0.(-25).75

= 0

( -25 ) x 52 + 75 x ( - 52 )

= [ 52 + ( -52 ) ] x [ ( -25 ) x 75 ]

= 0 x -1875

= 0

tik nha

(-25) x 52 + 75 x (-52)

= (-25) x 52 + (-75) + 52

= 52 . [(-25) + (-75)]

= 52 . 100

= 5200

a) 48 x 9 + 24 x 18 + 18 x 52

= 24 x 2 x 9 + 24 x 18 + 18 x 52

= 24 x 18 + 24 x 18 + 18 x 52

= 18 x (24+24+52)

=18 x 100

=1800

a﴿ 48 x 9 + 24 x 18 + 18 x 52

= 24 x 2 x 9 + 24 x 18 + 18 x 52

= 24 x 18 + 24 x 18 + 18 x 52

= 18 x ﴾24+24+52﴿

=18 x 100

=1800

a﴿ 48 x 9 + 24 x 18 + 18 x 52

= 24 x 2 x 9 + 24 x 18 + 18 x 52

= 24 x 18 + 24 x 18 + 18 x 52

= 18 x ﴾24+24+52

﴿ =18 x 100

=1800

a)18

b)-25

c)10

d)182

e)150

f)50

g)-105

h)198

a)18
b)-25
c)10
d)182
e)150
f)50
g)-105
h)198
và nó là dấu|...| chứ khống phải dấu /../ đâu bạn nhé

a.18

b.-25

c.10

d.182

e.150

f.50

g.-105

h.198

☛ HcTốt~

786 x ( 52 + 18 ) + 232 x ( 18 + 52 )

= 786 x 70 + 232 x 70

= 70 x ( 786 + 232 )

= 70 x 1018

= 71260

786 x ( 52 + 18 ) + 232 x ( 18 + 52 ) 

 = 786 x 70 + 232 x 70

= 70 x ( 786 + 232 )

= 70 x 1018

= 71260

       786*(52+18)+232*(18+52)

= 786*70+ 232*70

=(786+232)*70

=1018*70

=71260

Grieuruufuru rồi ư là một trong ytgyuryuty tuy yyyeyrheygteteyyeh

x + 75 = 52 + 33

x + 75 = 85

        x = 85 - 75

        x = 10                      k mk nha mina ~~!

x + 75 = 52 + 33

x + 75 = 85

         x = 85 - 75

         x = 10

tk mk mk tk lại

x+75=85

     x=85-75

     x=10

tk mk nhe

\(27.332+93.43+57.61+69.57\\ =27.332+93.43+57.\left(61+69\right)\\ =27.332+93.43+57.130\\ =8964+3999+7410=20373\\ 34.75+75.66-65.100\\ =\left(34+66\right).75-65.100\\ =100.75-65.100\\ =100.\left(75-65\right)\\ =100.10=1000\\ \left(456.11+912\right).37:13:74\\ =5928:13:\left(74:37\right)\\ =456:2=228\\ 6^2:4.3+2.5^2\\ =36:4.3+2.25\\ =9.3+50=27+50=77\\ 5.4^2-18:3^2\\ =5.16-18:9\\ =80-2=78\\\left[\left(315+372\right).3+\left(372+315\right).7\right]:\left(26.13+74.14\right)\\ =687.\left(3+7\right):\left(338+1036\right)\\ 687.10:1374\\ =6870:1374=5\\ 12:\left\{390:\left[500-\left(125+35.7\right)\right]\right\}\\ =12:\left[390:\left(500-370\right)\right]\\ =12:\left(390:130\right)=12:3=4\\ 192000-\left(1500.2+1800.3+1800.2:3\right)\\ =192000-\left(3000+5400+1200\right)\\ =192000-9600=182400\)

\(75.\left(25-52\right)-52.\left(25-75\right)\)

\(=75.25-75.52-52.25+52.75\)

\(=25.\left(75-52\right)\)'

\(=25.23=575\)

75.(25-52)-52.(25-75)

=75.25-75.52-52.25-52.75

=...tự làm đi

75 . ( 25 - 52 ) - 52 . ( 25 - 75 )

= 75 . 25 -75 . 52 - 52 . 25 - 52 . 75

= 25 . ( 75 - 52 )

= 25 . 23

= 572