geometry help; properties from algebra and proof? - XP Math - Forums

 XP Math - Forums geometry help; properties from algebra and proof?

 07-30-2007 #1 BaBy GiRl Guest   Posts: n/a geometry help; properties from algebra and proof? prove that if 2/3x= -8, then x=12.given: 2-3x= -8.prove: x=-12statements:a. 2/3x= -8 b. 2x= -24c. x= -12reasons:a.b.c.prove that if 5=2-1/2x, then x= -6.given: 5=2- 1/2xprove: x= -6statements:a. 5=2- 1/2xb. 2- 1/2x=5c. 2(2- 1/2x)=10d. 4-x=10e. -x=6f. x= -6reasons:a.b.c.d.e.f.prove that if 2x-7-1/3x-2, then x=3.given: 2x-7=1/3x-2prove: x=3statements:a. 2x-7=1/3-2b. 3(2x-7)=3(1/3x-2)c. 6x-21=x-6d. 5x-21= -6e. 5x=15f. x=3reasons:a.b.c.d.e.f.thanks so much.

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