Question 404085
Let's write an algebraic equation and then solve it.
x= number of people that voted in the last election
Now to write an expression for 5% of x, we convert the 5% to a decimal by moving the decimal two spaces to the left.  so 5.0% would be 0.05.  Now of means multiply so 5% of x is 0.05x.
The equation would read x+0.05X=25,800  since the number of people that voted in the last election plus 5% more is the number of people that voted now.
Simplify to read
1.05x+25,800  Remember there is an invisible 1 as a coefficient in front of the x.  When we combine like terms, we get 1x+0.05x= 1.05x.
x=24571  Divide both sides by 1.05 to isolate the x.
So 24571 people voted in the last election