If (a – b) is 17 more than (c + d) and (a + b) is 3 less than (c – d), then (a – c) is:	Select: A) 6 B) 2 C) 3 D) 7 E) 5
(a – b) – (c + d) = 17 and (c – d) – (a + b) = 3   =&gt; (a – c) – (b + d) = 17 and (c – a) – (b + d) = 3   =&gt; (b + d) = (a – c) – 17 and (b + d) = (c – a) – 3   =&gt; (a – c) – 17 = (c – a) – 3 =&gt; 2(a – c) = 14 =&gt; (a – c) = 7   ANSWER:7
<result>D</result>
If (a – b) is 17 more than (c + d) and (a + b) is 3 less than (c – d), then (a – c) is: