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OpenStudy (anonymous):
solve this equation by using subsitution a+b+c=180 b=3a c=5a
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OpenStudy (anonymous):
plug in the second and third equation into the first to get a+3a+5a=180, then solve this equation for a. After you have the value of a, you can plus that into the second and third equation to get the value of b and c.
OpenStudy (anonymous):
so, u substitute the value of b and c in the eqations...u get: a + 3a + 5a = 180... now add all the a's...do u know how to work it out further now @lucious890 ?
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