0,4+8(5+0.8(5/8))-5:2(1/2)= 0,4+8(5+0.80.625)-5:2*0.5= 0,4+8(5+0.5)-5:1= 0,4+8(5,5)-5= 0,4+44-5= 39,4
0,4+8(5+0.8(5/8))-5:2(1/2)
= 0,4+8(5+0.80.625)-5:2*0.5
= 0,4+8(5+0.5)-5:1
= 0,4+8(5,5)-5
= 0,4+44-5
= 39,4