Answer
121
Work Step by Step
Let $x$ be the measure of the supplement. The measure of the angle is $2x+3$.
$\overset{twice}{2x}\underset{three\ more\ than}{+3}$.
$x+(2x+3)=180\longrightarrow$ definition of supplement
$3x+3=180\longrightarrow$ combine like terms
$3x=177\longrightarrow$ subtraction property of equality
$x=59\longrightarrow$ division property of equality
Use substitution to find the measure of the angle.
$2x+3=2(59)+3=118+3=121$
