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is greater than or or and

3|2x-1|> 21
 
2x-1> 7.       2x-1< -7 
2x > 6.     And or or???    2x < -6 
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1 Answer

2x-1>=7  
2x>=8
x>=4
or
2x-1<=-7
2x <= -6
x<=-3