Question

Tìm x :

(5 . x – 2⁴) .7³ = 2.74  .

 

Answer 1

giúp mik với . càng nhanh càng tốt nha . mik sắp phải nộp bài rùi

Answer 2

\(\left(5x-2^4\right)\cdot7^3=2\cdot74\)

\(\Leftrightarrow\left(5x-16\right)\cdot343=148\)

\(\Leftrightarrow5x-16=\frac{148}{343}\)

\(\Leftrightarrow5x=\frac{148}{343}+16\)

\(\Leftrightarrow5x=\frac{5636}{343}\)

\(\Leftrightarrow x=\frac{5636}{1715}\)

Vậy x=\(\frac{5636}{1715}\)

Answer 3

thanks