SOLUTION: What is the other endpoint of the segment with midpoint -3 and endpoint-7?

Question 990962: What is the other endpoint of the segment with midpoint -3 and endpoint-7?
Found 2 solutions by rfer, macston:
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
=+1
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
...................(4)........(4)..............
<-----(-7)----(-3)----(1)--------->

Distance from -7 to -3 is +4
From midpoint to other endpoint is +4:
.
-3 + 4 = 1
.
The other endpoint is 1.
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