2/11х-0.45х=-5/14+1 2/10 2/11х-45/100х=-25/70 +1 14/70 2/11х-9/20х=-25/70+84/70=59/70 40/220х-99/220х=59/70 -59/220х=59/70 Х=59/70 /-59/220=59/70*-220/59=-220/70=-3 10/70=-3 1/7
(2/11)х+5/14=(9/20)х+6/5 (-59/220)х=59/70 х=59/70:(-59/220)=-22/7=-3 1/7