3 years ago

Help please!! Solve for x.

Mathematics

1 answer:

Vinil7 [7]3 years ago

7 0

Answer:

x = 9

Step-by-step explanation:

<em>Theorem:</em>

<em>The measure of an exterior angle of triangle equals the sum of the measures of its two remote interior angles.</em>

The angle measuring 12x + 14 is an exterior angle of the triangle.

The angles measuring 76 deg and 1 + 5x are its remote interior angles.

12x + 14 = 1 + 5x + 76

12x + 14 = 5x + 77

7x = 63

x = 9

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