\(\Leftrightarrow3x-16=2.7^4+7^3=5145\Leftrightarrow3x=5161\Leftrightarrow x=\dfrac{5161}{3}\)

\(\left(3x-2^4\right)-7^3=2.7^4\\ \Leftrightarrow\left(3x-16\right)=2.7^4+7^3\\ \Leftrightarrow3x-16=5145\\ \Leftrightarrow3x=5145+16=5161\\ \Leftrightarrow x=\dfrac{5161}{3}\)

=> 3x-2^4 = 2.7

=> 3x - 16 = 14 

=> 3x = 30

=> x = 10

BANG 10 NHE !

( 3x - 2⁴ ) . 7³ = 2.7⁴

=> ( 3x - 16 )  = 2 .( 7⁴ : 7³ )

=> ( 3x - 16 ) = 2 . 7

=> 3x - 16 = 14

=> 3x = 30

=> x = 10

\(\left(3x-2^4\right).7^3=2.7^4\\ \Leftrightarrow3x-16=2.7^4:7^3\\ \Leftrightarrow3x=14+16\\ \Leftrightarrow3x=30\\ \Leftrightarrow x=10\)

Vậy...

\(\left(2x-2^4\right).7^3=2.7^4\)

\(\Leftrightarrow\left(2x-2^4\right)=2.7^4:7^3\)

\(\Leftrightarrow2x-2^4=2.7\)

\(\Leftrightarrow2x-16=14\)

\(\Leftrightarrow2x=30\)

\(\Leftrightarrow x=15\)

Vậy ..

( 3x - 2⁴ ) . 7³ = 2 . 7⁴

( 3x - 16 ) . 343 = 4802

3x - 16 = 4802 : 343

3x - 16 = 14

3x = 14 + 16

3x = 30

x = 30 : 3

x = 10

=>(3x-16)=2*7=14

=>3x=30

=>x=10

\(\left(3x-2^4\right).7^3=2.7^4\)

\(\left(3x-2^4\right)=2.7^4\div7^3\)

\(3x-2^4=2.7\)

\(3x-2^4=14\)

\(3x=14+2^4\)

\(3x=30\)

`=>` \(x=30\div3\)

`=> x=10`

/x-3/=7-(-2)

/x-3/=9

x=/9+3/

x=/12/

x=/12/ 

<=> x= 12; -12

( 3x-2⁴)*7³=2*7⁴

(3x-16)*343=4802

3x-16=14

3x=14+16

3x=30

=> x = 10

x-[42+(-28)]=-8

x-14=8

x=8+14

x=22

\(\left(3x-2^4\right).7^{13}=2.7^{14}\) \(\Leftrightarrow\left(3x-16\right)7^{13}-2.7^{14}=0\) \(\Leftrightarrow\left(3x-16-2.7\right).7^{13}=0\) \(\Leftrightarrow\left(3x-2\right).7^{13}=0\) \(\Leftrightarrow3x-2=0\) \(\Leftrightarrow x=\frac{2}{3}\)              vậy x = \(\frac{2}{3}\)

eo hieu j ca

\(\left(3x-2^4\right).7^3=2.7^4\)

\(\Rightarrow\left(3x-2^4\right)=2.7^4:7^3=14\)

\(\Rightarrow\)\(3x=14+16=30\)

\(\Rightarrow x=30:3=10\)

nghĩ là ông dũng đi trần duy hưng

5,5