Final answer:
To simplify the expression, distribute the number outside the parentheses, combine like terms, and simplify.
Step-by-step explanation:
To simplify the expression 15.4 - 5.2(3f + 1.2), we need to distribute the 5.2 to each term inside the parentheses. This gives us:
15.4 - 5.2 * 3f - 5.2 * 1.2
Simplifying further, we have:
15.4 - 15.6f - 6.24
Combining like terms, we get:
-6.24 - 15.6f + 15.4
Now, we can add the constants together (15.4 - 6.24) and combine the terms with 'f' (-15.6f). This gives us the simplified expression:
-0.84 - 15.6f