Question 1208602
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g = cost, in dollars, of 1 game.
13g = cost, in dollars, of 13 games.
20-13g = amount leftover
<font color=red>20-13g = 10.25</font> is the equation to solve.


Let's solve for g.
To do so, follow PEMDAS in reverse to undo what is happening to the variable.
We'll subtract 20 from both sides. Then divide both sides by -13.
20-13g = 10.25
-13g = 10.25-20
-13g = -9.75
g = -9.75/(-13)
<font color=red>g = 0.75
Each game costs $0.75 aka 75 cents</font>


Check:
Each game costs $0.75, which means 13 of them cost Shayna a total of 13g = 13*0.75 = 9.75 dollars.
She will have 20-9.75 = 10.25 dollars remaining.
We have confirmed the answer.
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