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Please answer this!! sorry if you keep seeing my questions I suck at math !!

Please answer this!! sorry if you keep seeing my questions I suck at math !!-example-1

1 Answer

2 votes

Answer:

AB = 12

BC = 9

Explanation:

x= -4

AB -4+16 = 12

BC -4+13 = 9

12+9 = 21

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