SOLUTION:

Question 139954:
Found 2 solutions by jim_thompson5910, ruhi:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let x=supplement to angle A

Remember, supplement angles add to 180. So if we want to find the supplement to angle A, then

Subtract 72 from both sides

Combine like terms on the right side

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Answer:
So our answer is

So the supplement to angle A is 108 degrees
Answer by ruhi(1) (Show Source): You can put this solution on YOUR website!
the supplement means 2 angles that add up to 180
so if angle A eguals 72 degrees..... 180-72=108
so the supplement of angle A is 108
108 is ur answer