\(7.25-x+5.48=3.2\)
\(175-x+240=6\)
\(175-x=6-240\)
\(175-x=-234\)
\(x=175+234\)
\(x=409\)
Vậy x=409
Ta có: \(7\cdot25-x+5\cdot48=3\cdot2\)
\(\Leftrightarrow175+240-x=6\)
\(\Leftrightarrow415-x=6\)
hay x=409
Vậy: x=409
7.25−x+5.48=3.2
175−x+240=6
175−x=6−240
175−x=−234
x=175+234
x=409