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Which of the following, when substituted for the variable, makes the equation 3x - 5 = 7 true?

Which of the following, when substituted for the variable, makes the equation 3x - 5 = 7 true?
asked 20.2k views
4 votes
Which of the following, when substituted for the variable, makes the equation 3x - 5 = 7 true?

asked
User Mark Raymond
by
9.1k points

1 Answer

4 votes
3x - 5 = 7
3k = 12
k = 4

3(4) - 5 = 7
12 - 5 = 7
7 = 7

Hope this helps.
answered
User Shadira
by
7.8k points
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