3a + 6b = 45
2a - 2b = -12....multiply by 3
----------------
3a + 6b = 45
6a - 6b = - 36 ...(result of multiplying by 3)
---------------add
9a = 9
a = 1
3a + 6b = 45
3(1) + 6b = 45
3 + 6b = 45
6b = 45 - 3
6b = 42
b = 7
solution is : (1,7)
I think it would require 100 workers since 1 worker digs up 1 yard.
Hope this helps.
Answer:
The answer is 4
Step-by-step explanation:
Answer:
Step-by-step explanation:
i would say c
