You need to purchase enough hamburger buns to make 30 sandwiches. Buns come in packages of 8 or 12, depending on where you shop.
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Answer:
Step-by-step explanation:
4) You just have to find the lcm of the denominators
a) lcm(4,3,6)=4*3=12
b) I don't know the name of the property but it is :
"We can multiply the two members of an equality by the same non-zero number, we obtain an equality. "
5)