Add the two expressions. -4.2 +3 and 2.5x - 6

For this case we have the following expressions:

To add both expressions, what we must do is add similar terms.

We have then:

Rewriting we have:

The sum of both expressions is given by:

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.