2,5m+m=7,7

Let's solve for \(m\) in the equation:

\[ 2.5m + m = 7.7 \]

First, combine like terms:

\[ (2.5 + 1)m = 7.7 \]

\[ 3.5m = 7.7 \]

Now, divide both sides by 3.5:

\[ m = \frac{7.7}{3.5} \]

Calculate:

\[ m \approx 2.2 \]

Answer:

\[ m \approx 2.2 \]