\(x+5.2-\left(32+15.3:9-15\right)=0\)
\(x+10-\left(32+5-15\right)=0\)
\(x+10-22=0\)
\(x+10=22\)
\(x=12\)
Vậy \(x=12\)
( dấu chấm là dấu nhân nhé em )
x + 5,2 - (32 + 15.3:9 - 15) =0
\(x+5.2-\left(32+15\times3\div9-15\right)=0\)
\(\Leftrightarrow x+5.2-32-15\times3\div9+15=0\)
\(\Leftrightarrow x+10-32-15\times\frac{1}{3}+15=0\)
\(\Leftrightarrow x-22-15\times\frac{1}{3}+15=0\)
\(\Leftrightarrow x-22-15\left(\frac{1}{3}-1\right)=0\)
\(\Leftrightarrow x-22-15.\frac{-2}{3}=0\)
\(\Leftrightarrow x-22+10=0\)
\(\Leftrightarrow x-12=0\)
\(\Leftrightarrow x=12\)
