Answer: Our kidneys filter out excess ions from our blood so that they can be excreted through urine. If the concentration of ions is too high, the kidneys make sure to filter as much of them as they can out of the body. If there are not enough ions, the kidneys will filter them back into the system.
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- By substitution, justify that x = − 6 is a solution to x − 2 = − x − 14.

First, let's substitute the value of x as -6 in the equation.

Now, let's solve it.

Subtract 2 from -6 to get -8.

The opposite of -6 is 6.

Subtract 14 from 6 to get -8.

Compare -8 and -8. We can see that both the LHS & RHS are equal to each other. So, hence we proved that <u>x = − 6 is a solution of x − 2 = − x − 14.</u>
2 identical daughter cells