Respuesta :

devishri1977

Answer:

Step-by-step explanation:

1 - 3s - s + 8 -2 = 1 + 8 - 2 -3s - s

                        = 9 - 2 - 4s

                         = 7 - 4s

Here, 1 , 8  & (-2) are like term and when we add we get 7

-3s & -s are like terms. Add the coefficient of s , -3 +(-1) = -4