First, you divide 58 bars by 4. The answer will be 14 boxes with 2 bars remaining in the box.
I believe the equation would be
160+0.2y
Because 160 deer and you round the 20% into a decimal point.
For this case we have the following expression:

From here, we must clear the value of a.
We then have the following steps:
Place the terms that depend on a on the same side of the equation:

Do common factor "a":

Clear the value of "a" by dividing the factor within the parenthesis:

Answer:
The clear expression for "a" is given by:

G= 48/4???? that would make sense wouldn't it? because 48/4 would be the total number of points divided by the amount of games in which those points are scored.