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