How to find the coordinate of A when I have coordinate of B ( 7,8) and midpoint of AB (6,5)
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Answer:
x=(x1+x2)/2
6=(x1+7)/2
cross multiply
12=x1+7
12-7=x1
5=x1
y=(y1+y2)/2
5=(y1+8)/2
cross multiply
10=y1+8
10-8=y1
2=y1
coordinate of A (5,2)
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