which algebraic expression is equivalent to the expression below?

Question

12x-9x+x
given:
4+x
3+x
3
4x

Answer 1

To simplify the expression \( 12x - 9x + x \):

1. Combine like terms: \[ 12x - 9x + x = (12 - 9 + 1)x = 4x \]

Thus, the expression \( 12x - 9x + x \) simplifies to \( 4x \).

Among the given options, the equivalent algebraic expression is: \[ \boxed{4x} \]