Question

Please tell me how to find x

Answer 1

⇒Sum of interior angles of a triangle is 180°

Meaning

`(2x+13)+(3x-43)+x=180\\2x+3x+x+13-43=180\\6x-30=180\\6x=180+30\\6x=210\\(6x)/(6) =(210)/(6) \\\\x=35`

x according to the calculation is 35°

⇒To calculate the size of each angle plug in 35° in the place of x and simplify.

3x-43=3(35)-43

The angle labelled 3x-43 is equal 62°

The angle labelled 2x+13° is equal 2(35°)+13°=83°

And the angle labelled x is equal 35°