Respuesta :

Answer:

9.18.

Step-by-step explanation:

Given Equation:

5.21 + 3.97

= 9.18.

The Sum means the total of 2 numbers added together.

Step-by-step explanation:

The sum of 5.21 and 3.97 is 9.18

therefore 5.21+3.97=9.18

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