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Lilla's water bottle has some water in it already, but she wants to completely fill it up before going to practice. She adds 21 ounces of water to completely fill the 40-ounce bottle. Write an equation
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Lilla's water bottle has some water in it already, but she wants to completely fill it up before going to practice. She adds 21 ounces of water to completely fill the 40-ounce bottle. Write an equation to represent the situation.​

User Daniel Centore
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3 votes
21+x=40 would be the answer
User Rahul Yadav
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