If a is the sum of b and c, then which one of the following must equal b – c?
Choices.
A) a+2c  B) a+c  C) a-c  D) a-2c  E) a+2c
Given a= b+c if you subtracts both side with -2c   a-2c = b-c   Answer : a-2c
<result>D</result>
If a is the sum of b and c, then which one of the following must equal b – c?