Question

Solve for x???????????

Answer 1

`x=9`

Explanation:

For this you just have to make an equation and in order to do that you have to know that all these angles will equal 180°. Now we can write it out.

`3x-4+13x+2+5x-7=180`

Now we combine like terms:

`21x-9=180`

Add the 9 on both sides:

`21x=189`

Divide the 21 on both sides:

`x=9`