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17 August, 18:36

Solve for x = 4x+18°+5x°=90°

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  1. 17 August, 19:27
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    Answer: x = 8

    Step-by-step explanation:

    4x + 18 + 5x = 90

    9x + 18 = 90 Added like terms

    9x = 72 Subtracted 18 from both sides

    x = 8 Divided both sides by 9

    BONUS: The sum of these two angles is 90°, which means these angle are complementary.
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