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Combine 8x 20 180 - PowerPoint PPT Presentation

Angles: Setting up Equations

Angles: Setting up Equations. Right Angles. Complementary angles: Set equation equal to 90. 3x+7. 4x+13. Add the two expressions. (3x + 7) + (4x +13) = 90. 7x + 20 = 90 -20 -20 7x = 70 x = 10. Combine like terms: 7x + 20 = 90. Solve for x:.

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Combine 8x 20 180 - PowerPoint PPT Presentation

Angles: Setting up Equations