What happened to get to each step in solving the equation? 12x+x=180−x
Step 1: 32x=180−x
Step 2: 52x=180
Step 3: x=72
(I need an explanation please)

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?