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

3x + 20 = 4x + __ - x

User He Hui
by
7.8k points

1 Answer

7 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 Kara Potts
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