Respuesta :

[tex] \qquad \qquad\huge \rm༆ Answer ༄[/tex]

Here's the solution ~

[tex]\qquad \sf \dashrightarrow \: - 3y - ( - 8y)[/tex]

[tex]\qquad \sf \dashrightarrow \: - 3y + 8y[/tex]

[tex]\qquad \sf \dashrightarrow \: 5y[/tex]

The required result is 5y

-3y - -8y

two negatives make a positive so you are left with

-3y + 8y = 5y!

hope this helped :)