(25 x 184 - 100 x 46) x A (A = 25 x 184 + 46)

= (25 x 46 x 4 - 25 x 4 x 46) x A

= 0 x A

= 0

Tick mình nha

`a, 36 + 14 + 9`

`= 50 + 9`

`= 59`

`b, 51 + 12 + 18`

`=51 + 30`

`= 81`

`c, 65 + 9 + 5`

`= 70 + 9`

`= 79`

`d, 31 + 26 + 69`

`= 100 + 26`

`= 126`

=54/19

a)

(-4) . 32 . (-25) . 11

= (-4).(-25) . (32.11)

= 100 . 352

= 35200

b)

-86 . 46 - 46 . 27 + 46 . 23

= 46. ( -86 - 27 + 23)

= 46. (-90) = -4140

Chúc em học tốt!!!

a)

(-4) . 32 . (-25) . 11

= (-4).(-25) . (32.11)

= 100 . 352

= 35200

P/s tham khảo nha

\(-\left(34-25+46\right)+\left[34+\left(-25\right)-16\right]\)

\(=-34+25-46+34-25-16\)

\(=\left(34-34\right)+\left(25-25\right)+\left(-46-16\right)\)

\(=0+0+\left(-62\right)=-62\)

-(34 - 25 + 46) + [34 + (-25) - 16]
= (-55) + (-7) = -62

-17 hay -5

Có 2 trường hợp

Đổi|-46| thành 46 hoặc -46 rồi tính à

\(20-\left|-46\right|+\left(-25\right)-\left(-46\right)=20-46-25+46\)

\(=20-25=-5\)

A = \(\frac{40}{31\cdot39}+\frac{35}{39\cdot46}+\frac{30}{46\cdot52}+\frac{25}{52\cdot57}\)

A= \(5.\left(\frac{8}{31\cdot39}+\frac{7}{39\cdot46}+\frac{6}{46\cdot52}+\frac{5}{52\cdot57}\right)\)

A= \(5\cdot\left(\frac{1}{31}-\frac{1}{39}+\frac{1}{39}-\frac{1}{46}+\frac{1}{46}-\frac{1}{52}+\frac{1}{52}-\frac{1}{57}\right)\)

A= \(5.\left(\frac{1}{31}-\frac{1}{57}\right)\)

A= \(5.\left(\frac{26}{1767}\right)\)

A = \(\frac{130}{1767}\)

125 . 93 - 125 . 46 - 25 . 25

= 125 . 93 - 125 . 46 - 125 . 5

= 125 . ( 93 - 46 - 5 )

= 125 . 42

= 5250

=125.93-125.46-125

=125.(93-46-1)

=125.46

=5750

a, =46x(-217+117) =46x(-100)=-4600

b, =-25x(78-28)=-25x50=-1250

c,=35(-63-23)=35x(-86)=3010

a -> c => máy tính

-25+46

=21

-25+46=21

ai tk mình mình tk lại