<PRE><B>Question 186313</B>
Let s be the number susan had
L = s - 6
C = L + 8 = (s-6) + 8 = s + 2
M = c -5 = (s+2)-5 = s - 3
M = 5
So M = 5 = S - 3
S = 8

2) Let X be the starting point after the first play
s = x + 12
t = s - 24 = (x+12) - 24 = x - 12
f = t + 31 = (x-12) + 31 = x + 19
After f they were at their own 42. Which was x + 19 more than after the first play.
42 = x + 19
42 - 19 = x
23 = x

Fourth grade is hard</PRE>