(x-4,1)/2,5=(x+0,8)/5
x/2.5-1.64-(x+0.8)/5=0x/2.5-1.64-x/5-0.16=0
0.2x-1.64-0.16=0
0.2x-1.8=0
x=1.8/0.2
x=9
(x-4,1)/2,5=(x+0,8)/5
x/2.5-1.64-(x+0.8)/5=0
x/2.5-1.64-x/5-0.16=0
0.2x-1.64-0.16=0
0.2x-1.8=0
x=1.8/0.2
x=9