Answer:
Your answer is 2.4
Step-by-step explanation:
Https://www.symbolab.com/solver/algebra-calculator/%5Cleft(-5%5Cright)%5Ccdot%5Cleft(a-2b%2B3c-4d%5C...
it would be 6/10, then 2/5, and last is 1/2. hope this answered your question.
Step by step guide
1)carry the chicken over and put it there
2) farmer cross alone to carry the corn over and carry the chicken back
3) put the chicken there and carry the fox to put there with th3 corn
4) go back to get the chicken