Yanniva
Yanniva
02-09-2014
Mathematics
contestada
Twice as number decreased by 9 is 7
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AL2006
AL2006
02-09-2014
You said that. 2x - 9 = 7 . . . . . Add. 9. to each side: 2x = 16 . . . . . Divide each side by 2 : x = 8
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