Solve for x in the triangle. You must show your starting equation and all work. Then calculate the value of each angle in the triangle.

A triangle all adds up to 180°.
Therefore you must add them all up and equal them to 180.

Shown below:

2x+1+3x+x+5=180

Then of course you have to solve it.

Shown below:

6x+6=180

Move the 6 over to the side of 180 which leaves 6x by itself.

Shown below:

6x=180-6

Then solve the equation:

6x=174

Solve x:

x= 174/6

Hence, leaving x as 29°

After finding x, you must substitute it in the x values. Hope this was helpful.

The last one bc that's a calendar