Question

What is the value of x​

Answer 1

`x = 70`

Explanation:

`x = 180 - (30 + 80)`

`x = 180 - 110`

`x = 70`

to be sure

`70 + 80 + 30 { = }^(?) 180`

`100 + 80 { = }^(?) 180`

`180 = 180`

Answer 2

70°

Explanation:

All triangles' angles are added up to 180°

30 + 80 + x = 180

110 + x = 180

x = 180 - 110

x = 70