Question 345575
For a triangle,
{{{A+B+C=180}}}
{{{5n+37+4n-19+n+12=180}}}
{{{10n+30=180}}}
{{{10n=150}}}
{{{highlight(n=15)}}}
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{{{A=5(15)+37=75+37=112}}}degrees
{{{B=4(15)-19=60-19=41}}}degrees
{{{C=15+12=27}}}degrees