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In Fig. 4.72, A B C D . If O A=3x-19...

In Fig. 4.72, `A B C D` . If `O A=3x-19 ,\ \ O B=x-4` , `O C=x-3` and `O D=4` , find `x` . (FIGURE)

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  19. In Fig. 4.72, A B C D . If O A=3x-19 ,\ \ O B=x-4 , O C=x-3 and O ...

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  20. A B C is a triangle and P Q is a straight line meeting A B in P ...

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