Question

12x-3=3 mũ 2 nhân 3 mũ 3

Answer 1

12.x-3=3^2.3^3

12.x-3=9.27

12.x-3=243

x-3=243:12

x-3=20,25

x=20,25+3

x=23,25

Answer 2

\(12x-3=3^2.3^3\)

\(\Leftrightarrow12x-3=3^5\)

\(\Leftrightarrow12x=3^5+3\)

\(\Leftrightarrow12x=246\)

\(\Leftrightarrow x=246:12\Rightarrow x=\frac{246}{12}=\frac{41}{2}\)