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zheka24 [161]
3 years ago
9

Can you solve for x for this shape?

Mathematics
2 answers:
mr Goodwill [35]3 years ago
8 0
An exterior angle of a triangle is equal to the sum of the two angles opposite to it. So we have:

\sf 6x+1+20=9x-6

Now just solve for 'x'. First, simplify:

\sf 6x+21=9x-6

Add 6 to both sides:

\sf 6x+27=9x

Subtract 6x to both sides:

\sf 27=3x

Divide 3 to both sides:

\boxed{\sf x=9}
Ilia_Sergeevich [38]3 years ago
5 0
Hi my friend
6x + 1 + 20 = 9x - 6 (exterior angle of triangle)
3x = 27
x = 9
hope it helps☺
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