Two angles are supplementary. One angle measures 2x, and the other angle measures 3x - 15. Which equation can you use to find the measure of each angle? a) 2x + 3x - 15 = 90° b) 2x - 3x - 15 = 180° c) 2x - 3x - 15 = 90° d) 2x + 3x - 15 = 180°
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