Final answer:
To simplify the expression 1.17 − 0.07a + (−3.92a), combine the coefficients of a to get 1.17 − 3.99a.
Step-by-step explanation:
To simplify the expression 1.17 − 0.07a + (−3.92a), we combine like terms by adding the coefficients of a. So we have:
1.17 − 0.07a + (−3.92a) = 1.17 + (−0.07a − 3.92a)
Next, we add the coefficients of a:
1.17 + (−0.07 − 3.92)a = 1.17 − 3.99a
The simplified expression is 1.17 − 3.99a.