3,8т-(2,8т+0,7т)
при т= 2,4
3,8 * 2,4 - (2,8 * 2,4 + 0,7 * 2,4) = 0,72
1. 3.8*2.4=9.12
2. 2.8*2.4=6.72
3. 0.7*2.4=1.68
4. 6.72+1.68=8.4
5. 9.12-8.4=0.72
при т= 8,57
3.8*8.57-(2.8*8.57+0.7*8.57) = 2,571
1. 3.8*8.57=32.566
2. 2.8*8.57=23.996
3. 0.7*8.57=5.999
4. 23.996+5.999=29.995
5. 32.566-29.995=2.571