Х=4*10/5=8 а=6*4/3=8 b=0.4*7/2=1.4 y=3*3.2/8=1.2 y=3*5/2=7.5 c=9*7/6=10.5 x=3*1.4/0.7=6 a=9*1.6/0.6=18