An interior angle of a regular convex polygon is 156º. How many sides does the polygon have?

We know that the number of sides of a regular polygon is given by 360°/ each exterior angle, we get 360°/24° = 15. The regular polygon has 15 sides.

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in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1