Question

(3x - 2^4) . 7^3 = 2. 7^4. Giai gium minh voi

Answer 1

( 3x - 2⁴ ) . 7³ = 2 . 7⁴

=> ( 3x - 2⁴ ) = 2 . 7⁴ : 7³

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

=> 3x - 16 = 14

=> 3x = 30

=> x = 11

Answer 2

sr nhé x = 10 mik vt lộn

Answer 3

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

\(\Rightarrow\left(3x-16\right).343=2.2401\)

\(\Rightarrow343.\left(3x-16\right)=4802\)

\(\Rightarrow3x-16=\frac{4802}{343}\)

\(\Rightarrow3x-16=14\)

\(\Rightarrow3x=14+16\)

\(\Rightarrow3x=30\)

\(\Rightarrow x=10\)

Vậy x = 10