Tìm x biết e) 75 : ( x − 2 ) + 4 = 7 .
Giải thích
e) \(75:\left( {x - 2} \right) + 4 = 7\)
\(75:\left( {x - 2} \right) = 7 - 4\)
\(75:\left( {x - 2} \right) = 3\)
\(x - 2 = 75:3\)
\(x - 2 = 25\)
\(x = 25 + 2\)
\(x = 27\).
Vậy \(x = 27\).
e) \(75:\left( {x - 2} \right) + 4 = 7\)
\(75:\left( {x - 2} \right) = 7 - 4\)
\(75:\left( {x - 2} \right) = 3\)
\(x - 2 = 75:3\)
\(x - 2 = 25\)
\(x = 25 + 2\)
\(x = 27\).
Vậy \(x = 27\).