4(0,2x-7)-5(0,3+6)=50.8x-28-5*(0.3+6)-5=0
0.8x-28-5*6.3-5=0
0.8x-28-31.5-5=0
0.8x-59.5-5=0
0.8x-64.5=0
x=64.5/0.8
x=80.625