combine like terms to simplify the expression: 1.17 - 0.07a + (-3.92a)

Explanation:

Step1: Identify like - terms

The like - terms are $-0.07a$ and $-3.92a$.

Step2: Combine like - terms

$-0.07a+( - 3.92a)=(-0.07 - 3.92)a=-3.99a$.

Step3: Write the simplified expression

The original expression $1.17−0.07a+( - 3.92a)$ simplifies to $1.17-3.99a$.

Answer:

$1.17 - 3.99a$