Question

If the angles of a triangle are (3x°), (2x-7)° and (4x-11)°

Answer 1

Hey mate!

Since, the sum of the interior angles of a triangle is 180°,
3x°+2x°-7°+4x°-11° = 180°
=> 9x°-18° = 180°
=> 9x° = 180°+18°
=> 9x° = 198°
=> x = 198°/9°
=> x = 22°.

That's the answer!

Hope it helps :)

Answer 2

Answer:

22°

how?

Step-by-step explanation:

Since, the sum of the angles of a triangle is 180°,

3x°+2x°-7°+4x°-11° = 180°

=> -7 + -11 = -18

=>(3x + 2x + 4x) - 18 = 180

=> 9x°-18° = 180°

=> 9x° = 180°+18°

=> 9x° = 198°

=> x = 198°/9°

=> x = 22°.

to prove x = 22°

(3x°) + (2x-7)° + (4x-11)°

[replace all x with 22°]

(3 * 22°) + (2 * 22 -7)° + (4 * 22 -11)°

=> 66 + 37 + 77 = 180