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Find the missing number so that the equation has infinitely many solutions. 3x + 20 = 4x + __ - x
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35 votes
35 votes
Find the missing number so that the equation has infinitely many solutions.

3x + 20 = 4x + __ - x

User Krisja
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1 Answer

18 votes
18 votes
The missing number would be 20.

3x+20 = 3x+__

For an equation to have infinitely many solutions, both sides of the equation must be the same.

Therefore, the only solution would be 20.
User Alphonse
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