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

647-[y:(46+13+54)]=54-32+46

=647-[ y:( 46+13+54) ]=68

=647-[y:113]=68

=647-68

=579

=579x113

=65427

a: \(3^2\cdot\frac{1}{243}\cdot81^2\cdot\frac{1}{3^2}\)

\(=\frac{3^2}{3^5}\cdot\frac{3^8}{3^2}=\frac{1}{3^3}\cdot3^6=3^3=27\)

b: \(4^6\cdot256^2\cdot2^4=\left(2^2\right)^6\cdot\left(2^8\right)^2\cdot2^4\)

\(=2^{12}\cdot2^{16}\cdot2^4=2^{12}\cdot2^{20}=2^{32}\)

c: \(4^6\cdot9^5+6^9\cdot120\)

\(=2^{12}\cdot3^{10}+2^9\cdot3^9\cdot2^3\cdot3\cdot5\)

\(=2^{12}\cdot3^{10}+2^{12}\cdot3^{10}\cdot5\)

\(=2^{12}\cdot3^{10}\cdot6=2^{13}\cdot3^{11}\)

Ta có \(8^4\cdot3^{12}-6^{11}\)

\(=2^{12}\cdot3^{12}-2^{11}\cdot3^{11}\)

\(=2^{11}\cdot3^{11}\left(2\cdot3-1\right)=2^{11}\cdot3^{11}\cdot5\)

Ta có: \(A=\frac{4^6\cdot9^5+6^9\cdot120}{8^4\cdot3^{12}-6^{11}}\)

\(=\frac{2^{13}\cdot3^{11}}{2^{11}\cdot3^{11}\cdot5}=\frac{2^2}{5}=\frac45\)

d: \(4^2\cdot25^2+32\cdot125\)

\(=2^4\cdot5^4+2^5\cdot5^3\)

\(=2^4\cdot5^3\left(5+2\right)=2^4\cdot5^3\cdot7\)

\(B=\frac{4^2\cdot25^2+32\cdot125}{2^3\cdot5^2}\)

\(=\frac{2^4\cdot5^3\cdot7}{2^3\cdot5^2}=2\cdot5\cdot7=70\)

60

45-58+(-45)+(+58)-3=45-58-45+58-3=(45-45)+(58-58)-3=-3

(-57)-(-12)+3-(-57)=-57+12+3+57=(-57+57)+12+3=15

-(-24)-(-30)+(-24)-30+8=24+30-24-30+8=(24-24)+(30-30)+8=8

-(-12)+(+19)-(+12)+8-19=12+19-12+8-19=(12-12)+(19-19)+8=8

47-(-53)+(-47)-(+53)=47+53-47-53=(47-47)+(53-53)=0

-(+28)+32-(-28)+(-34)=-28+32+28-34=(-28+28)-(34-32)=-2

15-(+72)+(-15)+(+72)=15-72-15+72=(15-15)+(72-72)=0

20-(+46)+(-25)-(-46)=20-46-25+46=(20-25)+(46-46)=-5

28-(-32)+(-28)-32+5=28+32-28-32+5=(28-28)+(32-32)+5=5

-75+(-49)+(+75)+49-12=-75-49+75+49-12=(-75+75)+(49-49)-12=-12

\(...=45-58-45+58-3=-3\)

\(...=-57+12+3+57=15\)

\(...=24+30-24-30+8=8\)

\(...=12+19-12+8-19=8\)

\(...=47+53-47-53=0\)

\(...=-28+32+28-34=-2\)

\(...=15-72-15+72=0\)

\(...=20-46-25+46=-5\)

\(=...28+32-28-32+5=5\)

\(...=-75-49+75+49-12=-12\)

-x+(-32)+(-46)=-84

-x+(-32)=(-84)-(-46)

-x+(-32)=-38

-x=(-38)-(-32)

-x=-6

=>x=6

tick nha

-x-32-46=-84

-x-78=-84

-x=-84+78

-x=-6

x=6

-x + (-32) + (-46) = -84

-x - 32 - 46          = -84

-x - 78                 = -84

-x                        = -84 - 76

-x                        = -6

-x + (-32) + (-46) = -84

-x + (-32)             = -84 - (-46)

-x + (-32)             = -38

-x                         = -38 - (-32)

-x                         = -6

\(\Rightarrow\)x = 6

\(\frac{15}{26}+\frac{x}{13}=\frac{46}{32}\)

\(\frac{x}{13}=\frac{46}{32}-\frac{15}{26}\)

\(\frac{x}{13}=\frac{1196}{832}-\frac{480}{832}\)

\(\frac{x}{13}=\frac{716}{832}\)

\(\frac{x}{13}=\frac{179}{208}\)

\(\frac{x}{13.16}=\frac{179}{208}\)

\(\frac{x}{208}=\frac{179}{208}\)

\(x=179\)

chú ý: dấu "." là dấu nhân

ko mình nha

a. x - 108 = -14

x = 94

b. 84 + x = -80

x = -164

cứu mình điiiiiiiiiiiiiiiiiiiiiiiiiiiiii mọi người!