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lianna [129]
2 years ago
15

I need to solve for x

Mathematics
2 answers:
emmainna [20.7K]2 years ago
8 0
Upper triangle: 12x +7x + angle of vertex = 180°
Lower triangle: 7x+6x+1 + angle vertex  =180°
Notice than the angles at the vertex are equal

Then: 12x+7x+angle of vertex =7x+6x+1+angle of vertex
19x =13x+1
6x=1 & x=1/6


aalyn [17]2 years ago
6 0
6x+1 = 12x because the Z angles are the same

Solve this and you get:

1 = 12x - 6x => x = 1/6
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