Answer
$x=75$
Work Step by Step
$\overset\longrightarrow{AB}$ bisects $\angle RAN$
Use the definition of bisects.
$m\angle RAB=m\angle BAN$
Substitution property.
$x=2x-75$
Subtraction property of equality. (Subtract 2x)
$-x=-75$
Multiplication property of equality. (Multply by -1)
$x=75$
