tinh: 0,18x1230+0,9x4567x2+3x5310x0,6/1+4+7+10+..+52+55-514
A = 0,36x1239 + 0,9x4567x4 + 3x5130x1,2 / 1 + 4 + 7 +10 + ....+ 52 + 55 - 514.
A = 0,36x1230 + 0,9x4567x4 + 3x5130x1,2 / 1 + 4 + 7 +10 + ... + 52 + 55 - 514.
a=0,36x1230+0,9x456/1+4+7+10+...+52+55-514
0,18*1230+3*531*0,6-0,9*1288/1+4+7+10+...+52+55-514
A = 0,36x1230 + 0,9x4567x4 + 3x5130x1,2 / 1 + 4 + 7 +10 + ... + 52 + 55 - 514.
0.18*1230+0.9*4567*2+3*5310*06/1+4+7+10+...+52+55-514
0,18x1230+0,9x4567+2x3+5320x0,6
________________________________
1+4+7+10+.....+52+55-514
18*1230+0,9*4567*2+3*6310*0,6/1+4+7+10+...+52+55-514