Question 1059699
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The three angles of a triangular flag are x, twice the complement of x, and one-fifth the supplement of x. Find the angle measures.
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The first angle is x degrees.
The second angle is 2*(90-x).
The third angle is {{{(180-x)/5}}}.

The sum of the three angles is 180 degrees, which gives you an equation

{{{x + 2*(90-x) + (180-x)/5}}} = 180.

Multiply both sides by 5 to get

5x + 10(90-x) + (180-x) = 900.

Simplify further and solve it for x.
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