Tôj sẽ cho bn kết quả gần đúng( ͡° ͜ʖ ͡°) (nhớ đấy gần đúng thui nhé)

7x -x =\(5^{21}:5^{19}+3.2^2-7^0\)

7x -x =\(5^2\) + 3.4 -0

7x -x =25 +12 -0

7x -x =37

6x =37

x=6.16

Thấy bàj nó saj saj.Tạj đề bàj hay tạj tuj lm nhỉ??? ( ͠° ͟ʖ ͡°)

7x-x=5^21 : 5^19+3.2^2-7^0

6x=5^2 +3.4-1

6x=25+12-1

6x=37-1=36. x=6

7x-x=5²¹:5¹⁹+3.2²-7⁰

=>x.(7-1)=5³+3.4-1

=>6x=125+12-1

=>6x=136

=>x=68/3

7x - x = 5²¹ : 5¹⁹ + 3. 2² - 7⁰

(7-1)x=5² + 3. 4 - 1

6x      = 25 + 12 - 1

6x      = 36

  x      = 6

\(7x-x=5^{21}:5^{19}+3.2^2-7^0\)

\(\Rightarrow7x-x=5^2+3.4-1\)

\(\Rightarrow7x-x=25+12-1\)

\(\Rightarrow7x-x=37-1\)

\(\Rightarrow7x-x=36\)

\(6x=36\)

\(\Rightarrow x=6\)

7x - x = 5^2 + 12-7

6x = 25 + 12 - 7

6x = 37 - 7

6x = 30

x   = 30/6

x =5

\(7x=5^{21}:5^{19}+3\times2^2-7^0+x\)

\(7x=5^2+3\times4-1+x\)

\(7x=25+12-1+x\)

\(7x-x=36\)

        \(6x=36\)

           \(x=6\)

k mk nha

thank you

sao bn ranh hoi cAC CAU DE EO Z

NHUNG CAU NAY CAN CHI HOI

Bai 1: Tính nhanh

a) 5x+x = 39-3^11:3^9

=>5x+x=39-3^2

=>5x+x=39-9

=>5x+x=30

=>6x=30

=>x=5

b) 7x-x = 5^21:5^19+3*2^2-7^0

=>7x-x=5^2+3x4-1

=>7x-x=25+12-1

=>7x-x=37-1

=>7x-x=36

=>6x=36

=>x=6

c) 0:x = 0

=>x=0:0

=>x=0

<=> 6x = 25 + 12 -1

<=> 6x = 36

<=> x = 6

Vậy .........

7x-x=5²¹:5¹⁹+3.2²-7⁰

<=> 6x=5²+3x9-1

<=> 6x=25+27-1

<=> 6x=51

<=> x=51/6

Ta có : 7.x  - x = 5²¹ : 5¹⁹ + 3.2² - 7⁰

<=> 6.x            = 5² + 3.4 - 1

<=> 6.x            = 25 + 12 -1

<=> 6.x             = 36

<=> x               = 6

Vậy x = 6

6x=5^21 chia 5^19+14-1

6x=25+12-1

6x=36 suy ra x=6

a, 6x+x=5¹¹:5¹⁹+3¹

<=> 7x=3,00000256

sorry gửi nhầm .

\(a,6x+x=5^{11}:5^{19}+3^1\)

\(\Leftrightarrow7x=3,00000256\)

\(\Leftrightarrow x=0,428571794\) ( hình như đề sai )

\(b,7x-x=5^{21}:5^{19}+3.2^2-7^0\)

\(\Leftrightarrow6x=36\)

\(\Leftrightarrow x=6\)

=>7x-x=5^21-19+3.4 -1=25+12-1=36

=>6x=36

=>x=6