(3b−2c)−(6c+2b)−(b+c) .
First, let's simplify each expression within the parentheses:
(3b - 2c) becomes 3b - 2c
(6c + 2b) becomes 6c + 2b
(b + c) becomes b + c
Now we can subtract the second expression from the first:
(3b - 2c) - (6c + 2b) becomes 3b - 2c - 6c - 2b
Now let's simplify further:
3b - 2c - 6c - 2b becomes (3b - 2b) - (2c + 6c)
Simplifying even further:
3b - 2b becomes b
2c + 6c becomes 8c
Therefore, the final simplified expression is b - 8c.