-5 (x-1)-x+1 = -18 help please​

The value of x is 4.

Step-by-step explanation:

-5(x-1)-x+1= -18

or, -5x+5-x+1=-18

or, -6x+6= -18

or, -6(x-1)=-18

or, x-1=3

or, x=4

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.