-18=7v+9-10v
slove for v....
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Solve this system of equations. 12x − 18y = 27 4x − 6y = 10
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Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?
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