Answer:
a. The phrases 3.2a, -413a, and -a, as well as -1 and 7, are similar.
b. The simplified linear expression is: -2.1a + 6.
a. 3.2a - 1 - 413a + 7 - an is a linear expression, and the following are like terms that also appear in the expression:
Due to the shared variable, 3.2a, -413a, and -a are similar phrases.
Given that they are constants, -1 and 7 are similar expressions.
b. Merge the terms that are similar to make the linear expression 3.2a - 1 - 413a + 7 - a simpler:
3.2a - 4⅓a - a - 1 + 7
3.2a - 4.3a - a - 1 + 7
-2.1a + 6
Explanation:
I'm also in k12 hope this helps!