Respuesta :

[tex]\begin{gathered} 4-m=-1+4m \\ \text{Add m to both sides:} \\ 4-m+m=-1+4m+m \\ 4=5m-1 \\ \text{add 1 to both sides:} \\ 1+4=5m-1+1 \\ 5=5m \\ \text{Divide both sides by 5:} \\ \frac{5}{5}=\frac{5m}{5} \\ 1=m \\ m=1 \end{gathered}[/tex]

RELAXING NOICE
Relax