Answer:
280 is your answer right answer
A pick A I hope this helps
The answer to this is B. all you do is combine like terms, like 5y minus 2y and negative one plus 4.
Solution:
we are given that
Each cow has 4 legs and each chicken has 2 legs.
A boy counts 42 heads and 144 feet.
we have been asked to find how many cows are there?
Let there are x cows and y chicken.
Then we can write
Hence Number of cows=30