3,8т-(2,8т+0,7т) при т= 2,4;8,57

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