<PRE><B>Question 909199</B>
y+5 = x+y-9

5 = x - 9

x = 14

2(14) - 7 = y+5

21 = y+5

y = 16

16 +5 = 21

2(14) -7 = 21

14+16-9 = 21


All the sides are 21.

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