90*(8х-4)=20-(10х+2582)

720х-360=20-10х-2582

720х+10х=20-2582+360

730х=-2202

х=-2202:730=-1101/365=-3 цел 6/365

720х-360=20-10х-2582

720х+10х=360+20-2582

730х=-2202

х=-2202/730=-1101/365