Simplify 2c–3–5c + 7 + 9c–c.

To simplify the expression ( 2c – 3 – 5c + 7 + 9c – c ), follow these steps:

1. Combine like terms:

– For the ( c ) terms: ( 2c – 5c + 9c – c )

– Combine: ( (2 – 5 + 9 – 1)c = 5c )

– For the constant terms: ( -3 + 7 )

– Combine: ( -3 + 7 = 4 )

2. Put it all together:

– The simplified expression is ( 5c + 4 ).

Therefore, the correct answer is 5c + 4.