Question

450 : [ 41 - ( 2x - 5 ) ] = 3 mũ 2 . 5

Answer 1

\(450:\left[41-\left(2x-5\right)\right]=3^2\cdot5\\ \Rightarrow41-\left(2x-5\right)=450:45=10\\ \Rightarrow2x-5=41-10=31\\ \Rightarrow2x=36\\ \Rightarrow x=18\)

Answer 2

\(450:\left[41-\left(2x-5\right)\right]=3^2.5\)

\(\Leftrightarrow450:\left(41-2x+5\right)=45\)

\(\Leftrightarrow46-2x=10\)

\(\Leftrightarrow2x=36\Leftrightarrow x=18\)