Решите уравнения : (1,46 - 1/5х)-(0,86 - 2/9х) = 1

[latex](1,46-frac{1}{5}x)-(0,86-frac{2}{9}x)=1[/latex]   [latex]1,46-frac{1}{5}x-0,86+frac{2}{9}x=1[/latex]   [latex]frac{2}{9}x-frac{1}{5}x=1-1,46+0,86[/latex]   [latex]frac{2x}{9}-frac{1x}{5}=0,4[/latex]   [latex]frac{10x-9x}{45}=0,4[/latex]   [latex]frac{x}{45}=0,4[/latex]   [latex]x=0,4cdot45[/latex]   [latex]x=18[/latex]