It depends on the quality of the balls. It also depends on where you are buying them. Do you have any more details?
Solve by substitution


Just plug in y=-x-1 into y+x=3
So we get:

Simplify that:

And since that is not true, that means this system of equations has no solutions!
I'm guessing you are looking for an algebraic sentence. In that case, 12 less than g would make sense, or 12 subtracted from g
Answer:
25.4
Step-by-step explanation:
the answer is 25.4