If a + b - c =-2d, and if a - b + c = 2e, then a =  Select the correct option: A) 2(d + e) B) d – e C) (d + e)/2 D) d-2e E) e-d
Add both equations:   a + b - c =-2d   a - b + c = 2e   a+b-c+a-b+c=-2d+2e   2a=2e-2d   a=e-d   Ans:e-d
<result>E</result>
If a + b - c =-2d, and if a - b + c = 2e, then a =