In the figure, angle B is solved to be 66 degrees
How to find angle B
To find angle B, as in the figure, we use sum of angles in a triangle
This helps to get the equation
3x + 3x - 3 + 2x - 1 = 180
3x + 3x + 2x = 180 + 3 + 1
8x = 184
x = 23
Angle B = 3x - 3
= 3(23) - 3
= 69 - 3
= 66