Question

simplify the expression: 6 - 10f + 6f + 9f

Explanation:

Step1: Combine like - terms of $f$

$-10f+6f + 9f=(-10 + 6+9)f$

Step2: Calculate the coefficient of $f$

$(-10 + 6+9)f=5f$

Step3: Write the simplified expression

$6+5f$

Answer:

$6 + 5f$