SOLUTION: Diane's age increased by 13 is 40. I tried 13d=40 but i feel like its wrong

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Question 1145760: Diane's age increased by 13 is 40.
I tried 13d=40 but i feel like its wrong
Found 2 solutions by rothauserc, Alan3354:
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
Let d be Diane's age, then
:
d +13 = 40
:
d = 27
:
Diane's age is 27
:

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
You're right, you're wrong.