Since vertical angles are congruent, we can set the expressions for the measures of the two angles equal to each other:
9x + 3 = 12x - 6.
To find the value of x, we need to isolate it on one side of the equation. We can do this by subtracting 9x from both sides of the equation and adding 6 to both sides:
9x + 3 - 9x = 12x - 6 - 9x
3 = 3x - 6
Next, we can add 6 to both sides of the equation to isolate x:
3 + 6 = 3x - 6 + 6
9 = 3x
Finally, we divide both sides of the equation by 3:
9/3 = 3x/3
3 = x
Therefore, the value of x is 3. Answer: 3
The measure of two verticle angles are 9x + 3 and 12x - 6. Find x.(1 point)
9.5
8.7
12
3
1 answer