246 x 2005 - 2005 x 148 + 2005 x 102

= 2005 x (246 - 148 + 102)

= 2005 x 200

= 401000

169 : 3 + 562 : 3 + 169 : 3

= (169 + 562 + 169) : 3

= 900 : 3

= 300

201 x 2 + 201 + 201 x 3 + 201 x 4

= 201 x 2 + 201 x 1 + 201 x 3 + 201 x 4

= 201 x (2 + 1 + 3 + 4)

= 201 x 10

= 2010

a) -32 -4.(x-5) = 0

<=>4.(x-5)=-32

<=>x-5=(-32):4

<=>x+5=-8

<=>x=-8+5

<=>x=-3

Vậy x=-3

b) 13.(x-5)=-169

<=>x-5=(-169):13

<=>x-5=-13

<=>x=-13+5

<=>x=-8

vậy x=-8

c) (-2).x+5 = (-3).(-3)+8

<=>(-2).x+5=17

<=>(-2).x=17-5

<=>(-2).x=12

<=>x=12:(-2)

<=>x=-6

Vậy x=-6

d) (-8).x = (-10).(-2)-4

<=>(-8).x=16

<=>x=16:(-8)

<=>x=-2

vậy x=-2

e) (-9).x+3 = (-2).(-7)+16

<=>(-9).x+3=30

<=>(-9).x=30-3

<=>(-9).x=27

<=>x=27:(-9)

<=>x=-3

Vậy x=-3

a) Ta có: \(18-x=58-\left(-30\right)\)

\(\Leftrightarrow18-x=88\)

\(\Leftrightarrow x=18-88=-70\)

Vậy: x=-70

b) Ta có: \(x-27=\left(-43\right)-9\)

\(\Leftrightarrow x-27=-43-9\)

\(\Leftrightarrow x-27=-52\)

\(\Leftrightarrow x=-25\)

Vậy: x=-25

c) Ta có: \(169-\left(x+4\right)=69\)

\(\Leftrightarrow x+4=169-69\)

\(\Leftrightarrow x+4=100\)

\(\Leftrightarrow x=96\)

Vậy: x=96

d) Ta có: \(\left(5x+3\right)-\left(-24+4\right)=33\)

\(\Leftrightarrow5x+3+24-4-33=0\)

\(\Leftrightarrow5x-10=0\)

\(\Leftrightarrow5x=10\)

\(\Leftrightarrow x=2\)

Vậy: x=2

e) Ta có: \(225-\frac{\left(5x+10\right)}{25}+5=-\left(-20\right)\)

\(\Leftrightarrow225-\frac{5x+10}{25}+5-20=0\)

⇔\(-\frac{5x+10}{25}+210=0\)

\(\Leftrightarrow-\frac{5x+10}{25}=-210\)

⇔\(\frac{5x+10}{25}=210\)

\(\Leftrightarrow5x+10=210\cdot25=5250\)

\(\Leftrightarrow5x=5250-10=5240\)

\(\Leftrightarrow x=1048\)

Vậy: x=1048

e) 225 - ( 5x +10 ) : 25 +5 =-(-20)

225 - ( 5x +10 ) : 25 +5 = 20

( 5x +10 ) : 25 +5 =225 - 20

( 5x +10 ) : 25 +5= 205

( 5x +10 ) : 25= 205-5

( 5x +10 ) : 25= 200

( 5x +10 ) = 200 x 25

5x +10 = 5000

5x = 5000 - 10

5x = 4990

x = 4990 : 5

x = 998

a) 18-x=58-(-30)

18 - x = 58 + 30

18 - x = 138

x = 18 - 138

x = - 120

b)x - 27 = (-43)-9

x - 27 = -52

x = -52 + 27

x= - 25

c)169 -( x +4) = 69

x + 4 = 169 - 69

x+4 =100

x = 100 - 4

x = 96

d)(5x +3 ) - (-24 +4 )=33

(5x +3) +20 =33

5x +3 = 33-20

5x +3 = 13

5x = 13 - 3

5x = 10

x =10 : 5

x = 2

x

toan lp 1 cai con khi, la toan lp 6

toan lop 1 ma lop 5 ko giai dc dau

cái này là toán lớp 6 nhé

X ​. X = 169.1000

X.X = 1690000

x.x= 1300. 1300

X= 1300

Bài 3 :

a) 4.(x-5) - 2 ³=2⁴.3

4x-20-8=48

4x=76

x=19

b) 4.x³+15=271

4.x³=256

x³=64

=> x=4

c) ( 2x-3)²= 169

=> 2x-3= 13

2x=16

x=8

 Chúc bạn học tốt !

4*(x-5) - 2^3 = 2^4*3 

4*(x-5) - 8 = 16*3 

4*(x-5) - 8 = 48 

4*(x-5) = 48 + 8 

4*(x-5) = 56 

x- 5 = 56 : 4 

x - 5 = 14 

x = 14 + 5 

x = 19 

4*x^3 + 15 = 271 

4*x^3 = 271 - 15 

4*x^3 = 256 

x^3 = 256 : 4 

x^3 = 64 

x^3 = 4^3 

x = 4 

a) 4 x 169 x 10 - 40 x 67 - 80 = 6760 - 2680 - 80 

                                           =  4000

Kết quả =4000 nhé bn  !

a. 4000

b. 0

             ~ Hok tốt ~