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34kurt
2 years ago
7

I don't understand how to do this problem. help ? ( number 13)

Mathematics
1 answer:
OverLord2011 [107]2 years ago
7 0
5x- 10 = 20
5x -10 +10 = 20 +10
5x = 30
5x/5 =30/5
x = 6
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