<PRE><B>Question 1067260</B>
So, the problem tells you to use x for the current age of Cameron. But doesn&#39;t say what to use for the age of Miranda, so I&#39;ll use M, you can change it to something else if you have to:
M = x+21 we will use this value for M below.
M-8 = 2(x-8)
M-8 = 2x-16 substitute for M:
(x+21)-8 = 2x-16
x+21 = 2x-8
-x = -29 multiply both sides times -1
x = 29 Cameron is 29 and Miranda is 29+21 = 50
&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;&lt;&gt;
Check:
M-8 = 2(x-8)
50-8 = 2(29-8)
42 = 42 Correct</PRE>