№6 345008-269871,126547-79652,182*3,247*4,208*4,109*8. №8 х+320=8087 Х-180=240:3 400-Х=275+25
6) 345008-269871=75137 126547-79652=46895 182×3=546 247×4=988 208×4=832 109×8=872 8) х+320=8087 х-180=240:3 400-х=275+25 х=8087-320 х-180=80 400-х=300 х=7767 х=80+180 х=400-300 7767+320=8087 х=260 х=100 8087=8087 260-180=240:3 400-100=275+25 80=80 300=300