Six less than the product of four and a number x.

Six less than the product of four and a number x.

The word "than" reverses the positions of the word problem

So 4 and x comes first

4x

then 6 less : less means subtraction

4x - 6

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

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