How do I find x in this problem? Picture shown below.

Question

How do I find x in this problem?  Picture shown below.

anonymous · Answer

attachment

amistre64 · Answer

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amistre64 · Answer

looks to me like;

a/2 + (180-b/2) + c = 180  would account for all the angles in one of those relevant triangles

anonymous · Answer

how did you get a b c?  I just have x

amistre64 · Answer

20/2 + 180-(x+60)/2 + x = 180

they are just generic variables to help me sort thru it; i found them on the keyboard.

anonymous · Answer

funny. so is that how I solve it now?  just 20/2=10+180 how do I divide with  x and 60?

anonymous · Answer

or can we just multiply 180 by 2?

amistre64 · Answer

there is a "thrm" that deals with this that i can never remember so I tend to have to build it anew by simpler ideas every time i do it :)

amistre64 · Answer

10 - x/2 + 30 + x = 0

40 = x/2 - x

40 = x(1/2 - 1)

40 = x(-1/2)

-80 = x  ; im gonna assume i made a sign error someplace so I have to rechk it

amistre64 · Answer

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