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.(3x+20)°and(4x-36)°are supplementary.Find x |
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Answer» x = 28 Step-by-step explanation: Two SUPPLEMENTARY angles ADD up to 180°. => 3x+20+4x-36 = 180° => 7x-16 = 180° => 7x = 180+16 => 7x = 196 => x = 28° |
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