Answer :

We begin with the first expression:

[tex]$$39.4 + (-7.2)$$[/tex]

Since adding a negative number is equivalent to subtracting, we have:

[tex]$$39.4 + (-7.2) = 39.4 - 7.2$$[/tex]

Evaluating the subtraction gives a result of approximately

[tex]$$32.199999999999996 \quad \text{(or simply } 32.2 \text{)}.$$[/tex]

Next, we move on to the second expression:

[tex]$$4.5 - 29.26$$[/tex]

Here, subtracting a larger number from a smaller one results in a negative value. The evaluation gives:

[tex]$$4.5 - 29.26 = -24.76.$$[/tex]

Thus, the final answers are:

[tex]$$39.4+(-7.2)=32.199999999999996$$[/tex]
[tex]$$4.5-29.26=-24.76.$$[/tex]

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