162:x + 216:x = 6
(162 + 216):x = 6
378:x = 6
x = 378 : 6
x= 63
\(162\div x+216\div x=6\)
\(\Leftrightarrow\) \(\left(162+216\right)\div x=6\)
\(\Leftrightarrow\) \(378\div x=6\)
\(\Leftrightarrow\) \(x=378\div6\)
\(\Leftrightarrow\) \(x=63\)
Vậy : x là 63
#Satan_Dilys
#12/7/2020_8:09