Answer :

Sure, let's walk through the problem step-by-step to understand how to fill in the blanks correctly.

1. First Calculation:
- The initial task is to calculate [tex]\(12 + 7\)[/tex].
- When you add 12 and 7, you get 19.
- Therefore, the first blank should be filled with 19.

So the expression now looks like this: [tex]\(12 + 7 = 19 \quad + 6 = \qquad \)[/tex].

2. Second Calculation:
- Next, we take the result from the first calculation, which is 19, and add 6 to it.
- When you add 19 and 6, you get 25.
- Thus, the second blank should be filled with 25.

Now the complete expression is: [tex]\(12 + 7 = 19 \quad 19 + 6 = 25\)[/tex].

So, the correctly filled expression would look like this:
[tex]\[ 12 + 7 = 19 \quad 19 + 6 = 25 \][/tex]

Therefore, the blanks should correctly be filled with 19 and 25, respectively.