Question 1073409
{{{x=2y+18}}}
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{{{2y+18+y=90}}}
{{{3y=90-18}}}
{{{y=30-6}}}
{{{y=24}}}
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{{{x=2*24+18}}}
{{{x=66}}}
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The smaller angle is {{{highlight_green(y=24)}}}.



SUPPLEMENT OF y
{{{180-24=highlight_green(156)}}}