SOLUTION: If angle HDA and angle ADR are supplementary what is the value of x? angle HDA is (7x-3) & angle ADR is (2x-6)

Question 117867: If angle HDA and angle ADR are supplementary what is the value of x?
angle HDA is (7x-3) & angle ADR is (2x-6)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If they are supplementary, then angle HDA +angle ADR =180 degrees. So we have the equation:

Start with the given equation

Combine like terms on the left side

Add 9 to both sides

Combine like terms on the right side

Divide both sides by 9 to isolate x

Divide

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Answer:
So our answer is
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