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.
For the connexus quick check
10x°−20°=180°
9x°+135°=180°.
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1 answer