-7,1+-4,9

It seems you're trying to perform an operation with the numbers \(-7.1\) and \(-4.9\).

If you want to add them together:

\[ -7.1 + (-4.9) = -7.1 - 4.9 = -12 \]

So, \(-7.1 + -4.9 = -12\).

If this isn't what you were looking for, please provide more details!