For the connexus quick check

Question

10x°−20°=180°
9x°+135°=180°.
165
110
100

Answer 1

To solve the equation 10x° - 20° = 180°, you need to isolate the variable x°.

10x° - 20° = 180°
Add 20° to both sides:
10x° = 200°
Divide both sides by 10:
x° = 20°

Therefore, x° = 20°.

For the equation 9x° + 135° = 180°, follow the same steps to isolate x°:

9x° + 135° = 180°
Subtract 135° from both sides:
9x° = 45°
Divide both sides by 9:
x° = 5°

Therefore, x° = 5°.

The correct answer is 20° for the first equation and 5° for the second equation.