(3x+2x)*8=6400 решите пожаста

5x*8=6400 5x=6400/8 5x=800 x=800/5 x=160

[latex](3x+2x)\cdot8=6400[/latex]   [latex]3x+2x=6400:8[/latex]   [latex]5x=800[/latex]   [latex]x=800:5[/latex]   [latex]x=160[/latex] ______________________________________________________ [latex](3\cdot160+2\cdot160)\cdot8=6400[/latex] (это проверка)   [latex](480+320)\cdot8=6400[/latex]   [latex]800\cdot8=6400[/latex]   [latex]6400=6400[/latex]