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6 February, 18:33

If a and b are supplementary angles and a is three times as larger as b find the measures

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  1. 6 February, 21:28
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    Alright so ...

    a+b=180

    a=3b

    substitute a for 3b

    3b+b=180

    4b=180

    divide both sides by 4

    b=45

    multiply by 3

    a=135
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