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Find the missing number so that the equation has infinitely many solutions. 3x + 9 = x + 9 + x What’s the answer?

Find the missing number so that the equation has infinitely many solutions. 3x + 9 = x + 9 + x What’s the answer?
asked 135k views
6 votes
Find the missing number so that the equation has infinitely many solutions.

3x + 9 =
x + 9 + x
What’s the answer?

asked
User Giltsl
by
7.8k points

2 Answers

9 votes

Answer:

x= 0 is correct.

answered
User Srivatsa Marichi
by
7.9k points
4 votes
3x + 9= 3 (x + 3)
x + 9 + x= 2x + 9
answered
User Tecnocat
by
8.3k points
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