Question 341349
Given:
7.5 (a - 3)
This says "7.5 times the quantity a minus 3".
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To "distribute" the 7.5, we multiply each term inside the parenthesis by 7.5.
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The distributive property simply states that given expression is the same as the following:
7.5 (a - 3) 
= 7.5(a) - 7.5(3) 
= 7.5a - 22.5