Question

please help me solve step by step explanation​

Answer 1

Answer:

__________

x = 8°

Step-by-step explanation:

________________________

All sides of a triangle = 180°

A+B+C=180°

(5x-60°) + (2x+40°) + (3x-80°) = 180°

Now, open the brackets.

5x-60°+2x+40°+3x-80° = 180°

(5+2+3)x + (-60+40-80)° = 180°

10x+(-100°) = 180°

10x-100° = 180°

10x = (180-100)°

10x = 80°

$x = \frac{80}{10}°$

x = 8°

Hope it helps. Thank you