Devaughn is 7 years older than Sydney. The sum of their ages is 99. What is Sydney's age?
1 answer:
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Answer:
(-8 , 3)
Step-by-step explanation:
(x1 , y1) (x2 , y2) = (-10 , -1) (-6 , 7)
,
-6 is going to be my x1 and -10 my y1
7 is going to be my x2 and -1 my y2
(-8 , 3)