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OpenStudy (anonymous):
find the 20th number in the list 7,8,9,... 20th number?
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OpenStudy (anonymous):
To solve this you want to create an equation. The equation would be first number + # you're looking for times difference between numbers. In this case 7 is your starting number. and you want to find the 20th number. So you have: 7 + 20x You have to find x. (the difference between numbers. So, what is added to 7 to get the second number, that's also added to that number to get the third? Plug that in and solve with a calculator.
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