A store is selling cookies for $8 for 12 bags .how much will it cost if you want to buy 30 for class and a gallon of milk for $4
2 answers:
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Answer:
x=3 and 9
Step-by-step explanation:
; x-3=0
x=3 (change side change mark)
and
change side change mark.
So, x=9
If u wanna check the answer you can check by substitution x=3 and 9 in equation.
hope it helps you ☺️