We are given two intersecting lines. One angle is labeled as $123^\circ$ and the angle adjacent to it is labeled as $(2v+1)^\circ$. We need to find the value of $v$.

1. Problem Description

We are given two intersecting lines. One angle is labeled as $123^\circ$ and the angle adjacent to it is labeled as $(2v+1)^\circ$. We need to find the value of $v$.

2. Solution Steps

Since the two angles are adjacent and form a straight line, they are supplementary angles. This means their sum is $180^\circ$.

Therefore, we can write the equation:

$123 + (2v+1) = 180$

Now we solve for $v$.

$123 + 2v + 1 = 180$

$124 + 2v = 180$

$2v = 180 - 124$

$2v = 56$

$v = \frac{56}{2}$

$v = 28$

3. Final Answer

The value of $v$ is

2

8.