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Someone pls help ive been stuck for forever

Someone pls help ive been stuck for forever-example-1

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This is a triangle. The interior angles of a triangle always add up to 180 degrees. Thus, write an equation representing the sum of the given angles, with "180 degrees" on the right side.

4x-1 + 8x+2 + 71 = 180 degrees.

Solve for x!
User Marcelus Trojahn
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