Which correctly shows how to use the GCF and the distributive property to find an expression equivalent to \( 45+72 \) ? \( ((15+24) \) \( 8(5+8) \) \( (8)(9)+(2)(30) \) \( (3)(15)+(8)(9) \)
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To find the expression equivalent to \( 45 + 72 \) using the GCF and the distributive property, we first determine the GCF of the numbers involved. The GCF of \( 45 \) and \( 72 \) is \( 9 \). Now we can factor both terms: \( 45 = 9 \times 5 \) and \( 72 = 9 \times 8 \). Putting this together, we get: \( 45 + 72 = 9 \times 5 + 9 \times 8 \), which can be factored further to \( 9(5 + 8) \). So, among the options, the correct approach shows the combination of numbers in the expression as \( (9)(5+8) \)! Another way to view it is through real-world contexts, like sharing or distributing items evenly. If you had 45 candies and 72 candies split among friends, finding the GCF helps determine how to effectively share those candies while keeping the distribution fair. And remember, it’s easy to get lost in the steps—double-check your calculations, especially with common factors!