1/  11.(-36) - 64 . 11

    = 11 ( -36-64)

     = 11 x (-100) =-1100

2/  125 x (-24+24)

      = 125 x 0 =0

3/  -125 x 23 + 23 x 225

     = 23 ( -125 + 225)

      = 23 x 100 = 2300

(-11)(36+64)=-11.100=-1100

125(-24+24)=125.0=0

-23(125-225)=-23.(-100)=2300

A=B/C

B=11-11/5-11/25-11/125

=11(1-1/5-1/25-1/125)

C=9-9/5-9/25-9/125

=9(1-1/5-1/25-1/125)

Chia ca B va C cho(1-1/5-1/25-1/125)

A=B/C=11/9

nhớ k cho mink nhé

=>3x-125=1

hay x=42

92-(3x-125).11=81

(3x-125).11=92-81

(3x-125).11=11

3x-125=11.11

3x-125=121

3x=121+125

3x=246

x=246:3

x=82

125 x 11=1375

Ai k mình thì mik lại, yên tâm.

125 x 11 = 1375 nhé bạn

125*11= 1375 nhé!

tk mk nha

    = ( 125 x 0,75 + 125 x 25% ) x ( 9 x 11 - 0,9 x 100 - 0,9 x10 )
    = ( 125 x 0,75 + 125 x 0,25 ) x ( 9 x 11 - 9 x 10 - 9 x 1 )
    = 125 x ( 0,75 + 0,25 ) x ( 9 x 11 - 9 x 10 - 9 x 1 )
    =  125 x 9 x ( 11-10 -1 )
    =    125 x 9 x 0
    =        0

11: \(=215\cdot\left(-14+1236\right)+215\cdot\left(14-236\right)\)

\(=215\left(-14+1236+14-236\right)=215\cdot1000=215000\)

12: \(=125\cdot25-125\cdot89+128\cdot89-128\cdot125\)

\(=125\cdot\left(-103\right)+89\cdot3\)

=-12608

a)54 : 3³ + 6.5²

= 54 : 27 + 6.25

= 2 + 150

= 152

b) 45.26 + 45.74 - 1500

= 45.(26 + 74) - 1500

= 45.100 - 1500

= 4500 - 1500

= 3000

c) 125 + 132 + (-125) + (-21)

= [125 + (-125)] + [132 + (-21)]

= 0 + 111

= 111

d) 11 - 13 + 15 - 17 + 19 - 21 + 23 - 25

= -2 + (-2) + (-2) + (-2)

= (-4) + (-2) + (-2)

= (-8)