0,8*(100-0,04х) =8,64
80 – 0.032x = 8.64
– 0,032x = 8,64 – 80
-0.032x = -71.36
x = 2230
1,7(5х-0,16)=0,238
8.5x – 0.272 = 0.238
8,5x = 0,238 + 0,272
8.5x = 0.51
x = 0.06
0,8*(100-0,04х) =8,64
80 – 0.032x = 8.64
– 0,032x = 8,64 – 80
-0.032x = -71.36
x = 2230
1,7(5х-0,16)=0,238
8.5x – 0.272 = 0.238
8,5x = 0,238 + 0,272
8.5x = 0.51
x = 0.06